This user's manual describes typical meteorological year (TMY) data sets derived from the 1991- ... The meteorological d
A national laboratory of the U.S. Department of Energy Office of Energy Efficiency & Renewable Energy
National Renewable Energy Laboratory Innovation for Our Energy Future
Users Manual for TMY3 Data Sets S. Wilcox and W. Marion
NREL is operated by Midwest Research Institute ● Battelle
Contract No. DE-AC36-99-GO10337
Technical Report NREL/TP-581-43156 April 2008
Users Manual for TMY3 Data Sets S. Wilcox and W. Marion Prepared under Task No. PVA7.6101
National Renewable Energy Laboratory 1617 Cole Boulevard, Golden, Colorado 80401-3393 303-275-3000 • www.nrel.gov Operated for the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy by Midwest Research Institute • Battelle Contract No. DE-AC36-99-GO10337
Technical Report NREL/TP-581-43156 April 2008
NOTICE This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States government or any agency thereof. Available electronically at http://www.osti.gov/bridge Available for a processing fee to U.S. Department of Energy and its contractors, in paper, from: U.S. Department of Energy Office of Scientific and Technical Information P.O. Box 62 Oak Ridge, TN 37831-0062 phone: 865.576.8401 fax: 865.576.5728 email: mailto:
[email protected] Available for sale to the public, in paper, from: U.S. Department of Commerce National Technical Information Service 5285 Port Royal Road Springfield, VA 22161 phone: 800.553.6847 fax: 703.605.6900 email:
[email protected] online ordering: http://www.ntis.gov/ordering.htm
Printed on paper containing at least 50% wastepaper, including 20% postconsumer waste
Preface This user's manual describes typical meteorological year (TMY) data sets derived from the 19912005 National Solar Radiation Data Base (NSRDB) update. These data sets provide greater geographical coverage than previous TMY sets with 1020 locations in the United States and its territories. To distinguish between the old and new data sets, the new TMY data sets are referred to as TMY3. The TMY, TMY2, and TMY3 data sets cannot be used interchangeably because of differences in time (solar versus local), formats, elements, and units. Unless they are revised, computer programs designed for previous TMY data will not work with TMY3 data. The National Renewable Energy Laboratory (NREL) provides a software utility that allows reformatting of the TMY3 data to the TMY2 format. The TMY data sets hold hourly values of solar radiation and meteorological elements for a 1year period. Their intended use is for computer simulations of solar energy conversion systems and building systems to facilitate performance comparisons of different system types, configurations, and locations in the United States and its territories. Because they represent typical rather than extreme conditions, they are not suited for designing systems to meet the worst-case conditions occurring at a location. The TMY3 data sets and this manual were produced by NREL's Electric and Systems Center under the Solar Resource Characterization Project, which is funded and monitored by the U.S. Department of Energy's Energy Efficiency and Renewable Energy Office.
Acknowledgements The meteorological data used in this data set are provided by the National Climatic Data Center (NCDC) from its Integrated Surface Database (ISD). NREL gratefully acknowledges the countless hours of time and expertise that went into the creation and maintenance of the ISD. More information on the ISD and NCDC is available at http://ncdc.noaa.gov. We also acknowledge the valuable contributions of the Atmospheric Sciences Research Center (ASRC), State University of New York at Albany. The ASRC team provided much of the modeled solar radiation data in this data set using the SUNY satellite model.
iii
Table of Contents Preface............................................................................................................................................ iii Acknowledgements........................................................................................................................ iii List of Figures ................................................................................................................................ iv List of Tables .................................................................................................................................. v 1 Description of the TMY3 Data Set ......................................................................................... 1 1.1 Introduction..................................................................................................................... 1 1.2 Acquiring TMY3 Data.................................................................................................... 1 1.3 Source Data for the TMY3 Data Set............................................................................... 1 1.4 TMY3 Data Format......................................................................................................... 3 1.5 TMY3 Site Selection....................................................................................................... 9 2 Procedures for Developing TMY3........................................................................................ 10 2.1 Sandia Method .............................................................................................................. 10 2.2 Weighting and Index Modifications for TMY2 and TMY3 ......................................... 13 2.3 Changes from TMY2 to TMY3 .................................................................................... 14 2.4 El Chichón and Mount Pinatubo Years ........................................................................ 14 2.5 Leap Years .................................................................................................................... 15 2.6 Month Interface Smoothing .......................................................................................... 15 2.7 Allowance for Missing Data ......................................................................................... 15 2.8 TMY3 Process Development and Quality Control....................................................... 15 2.9 Calculation of Illuminance Data ................................................................................... 19 2.10 Assignment of Source and Uncertainty Flags............................................................... 19 3 References............................................................................................................................. 21 Appendix A – TMY3 Stations ...................................................................................................... 23
List of Figures Figure 2-1. Cumulative distribution functions for June global horizontal solar radiation for Boulder, Colorado (example from TMY2 processing)................................................................. 12 Figure 2-2. Direct normal delta mean (new minus original 1961–1990) for each evaluation station............................................................................................................................................ 16 Figure 2-3. Year selection frequency comparison between original 1961–1990 and re-created 1961–1990 TMYs. ........................................................................................................................ 17 Figure 2-4. Year selection frequency for 30-year 1976–2005 TMY. ........................................... 18 Figure 2-5. Year selection frequency for 15-year 1991–2005 TMY. ........................................... 19
iv
List of Tables Table 1-1. TMY3 data header (line 1) ............................................................................................ 3 Table 1-2. TMY3 data header (line 2) ............................................................................................ 3 Table 1-3. TMY3 data fields (lines 3-8762) ................................................................................... 4 Table 1-4. Solar radiation and illuminance source flags................................................................. 8 Table 1-5. Meteorological source flags .......................................................................................... 8 Table 1-6. Meteorological uncertainty flags................................................................................... 9 Table 2-1. Weighting values for FS statistics ............................................................................... 13 Table 2-2. Bias (test data minus original 61-90 TMY)................................................................. 17 Table 2-3. Standard deviations ..................................................................................................... 17
Acronyms ASHRAE
American Society of Heating, Refrigerating, and Air-Conditioning Engineers
TMY
typical meteorological year
NREL
National Renewable Energy Laboratory
NSRDB
National Solar Radiation Data Base
CSV
comma separated value
CDF
cumulative distribution functions
FS
Finkelstein- Schafer
WS
weighted sum
v
1 Description of the TMY3 Data Set This manual describes how to obtain and interpret the data in the Typical Meteorological Year, version 3 (TMY3) data sets. These data sets are an update to, and expansion of, the TMY2 data released by the National Renewable Energy Laboratory (NREL) in 1994. 1.1 Introduction A typical meteorological year (TMY) data set provides designers and other users with a reasonably sized annual data set that holds hourly meteorological values that typify conditions at a specific location over a longer period of time, such as 30 years. TMY data sets are widely used by building designers and others for modeling renewable energy conversion systems. Although not designed to provide meteorological extremes, TMY data have natural diurnal and seasonal variations and represent a year of typical climatic conditions for a location. The TMY should not be used to predict weather for a particular period of time, nor is it an appropriate basis for evaluating real-time energy production or efficiencies for building design applications or solar conversion systems. Important note: Some of the meteorological data in this data set have been filled. The data-filling process was designed to provide serially complete records as input for modeling the solar radiation fields. Filled meteorological data fields (which are flagged in the data file) may also be useful for certain renewable energy applications. However, the filled data are not suitable for climatological studies. The TMY data set is composed of 12 typical meteorological months (January through December) that are concatenated essentially without modification to form a single year with a serially complete data record for primary measurements. These monthly data sets contain actual time-series meteorological measurements and modeled solar values, although some hourly records may contain filled or interpolated data for periods when original observations are missing from the data archive. 1.2 Acquiring TMY3 Data The TMY3 data are available for download via the World Wide Web. Data may be accessed at http://rredc.nrel.gov/solar/old_data/nsrdb/1991-2005/tmy3. 1.3 Source Data for the TMY3 Data Set The first TMY data set for the United States was produced by Sandia National Laboratories in 1978 for 248 locations using long-term weather and solar data from the 1952–1975 SOLMET/ERSATZ database (Hall et al. 1978). NREL updated the TMY data in 1994 using data from the 30-year 1961–1990 National Solar Radiation Data Base (NSRDB) (Marion, et al. 1995). In 2007, NREL released a 15-year updated NSRDB for 1991–2005 (Wilcox et al. 2007a). The TMY3 data described here were produced using input data for 1976-2005 from the 19611990 NSRDB, Version 1.1 and the 1991-2005 NSRDB update. Because the 1961-1990 NSRDB has 239 sites and the 1991-2005 NSRDB update has more than 1,400 sites, production of the TMY3 data was designed to maximize both the number of stations 1
and the number of years from which to characterize the typical conditions. At sites where data are available for 30 years, the base time period for the TMY algorithm spans 1976-2005. For the remaining sites, the base time period spans 1991-2005. These two categories of sites are documented in Appendix A. In the creation of a TMY, selecting from a larger database generally affords smaller differences between selected data months and long-term monthly characteristics. Conversely, the smaller the pool of years from which to determine climate characteristics, the less likely the selection represents the climate (ASHRAE 2004). In the same context, the eruptions of El Chichón in 1982 and Mt. Pinatubo in 1991 had significant effects on solar radiation for the United States and further reduced the pool of data for determining the typical climate. Volcanic eruptions, while often significantly diminishing solar energy at the earth’s surface, are rare, unpredictable, and variable in intensity. Designers may want to know the potential effects of volcanic eruptions to determine worst-case scenarios, but such perturbations do not contribute to long-term climate characterization. Except for a few changes to the weighting criteria, which account for the relative importance of the solar radiation and meteorological elements, the TMY2 and TMY3 data sets were created using procedures similar to those developed by Sandia National Laboratories (Hall et al. 1978) to create the original TMYs from the 1952-1975 SOLMET/ERSATZ data (see Section 2.1). Minor changes to the algorithm were made between the TMY2 and TMY3 production runs (see Section 2.3). A small change to the persistence criteria better accommodates selecting a TMY month for periods or records with fewer years. Also, computer code was removed that prioritized the selection of months with measured solar data because no measured data were used in the 19912005 NSRDB update. The effects of these changes between the TMY2 and TMY3 algorithm were evaluated as part of the TMY3 production process (see Section 2.8). In the context of producing data sets with similar characteristics, these effects were small (Wilcox, et al. 2008). The Sandia method is an empirical approach that selects individual months from different years occurring in the period of record. For example, in the case of the NSRDB that contains 30 years of data, all 30 Januarys are examined, and the one judged most typical by the TMY algorithm is selected to be included in the TMY. The other months of the year are treated in a like manner, and then the 12 selected typical months are concatenated to form a complete year. The 12 selected typical months for each station were chosen using statistics determined by considering five elements: global horizontal radiation, direct normal radiation, dry bulb temperature, dew point temperature, and wind speed. These elements are considered the most important for simulating solar energy conversion systems and building systems. Because the TMY algorithm assigns priority to the solar radiation elements, the selected months may or may not be typical for other elements. Cloud cover, which correlates well with solar radiation, is probably reasonably typical. Other elements are not related to the elements used for selection; consequently, their values may not be typical. Additionally, even though wind speed was used in the selection of the typical months, its relatively low weighting with respect to the other elements prevents it from being sufficiently typical for simulating wind energy conversion systems.
2
1.4 TMY3 Data Format The format for the TMY3 data is radically different from the TMY and TMY2 data.. The older TMY data sets used columnar or positional formats, presumably as a method of optimizing data storage space. Such formats are difficult to read, and it is difficult to import specific fields into many software packages. The comma separated value (CSV) format is ubiquitous, and many existing programs and applications provide built-in functions to read or parse it. For that reason, the TMY3 data set is distributed in the CSV format. For compatibility with existing software, NREL has produced an application to convert from TMY3 to TMY2 format. Despite the format differences, the fields in the TMY3 are very similar to those in the TMY2 data set. Fundamental differences are measurement units, which are SI or equivalent in the TMY3, the addition of three new fields for surface albedo and liquid precipitation, and the removal of the fields for present weather, snow-depth, and days since last snowfall that were present in the TMY2. These fields were removed because of incompatible changes in the nature of the source data or because the source data were not available. The TMY3 data files are named according to the USAF site identifier as 999999TY.CSV, where 999999 represents the six digit USAF station identifier (see Appendix A). The TMY3 data format has two file header lines and 8,760 lines of data, each with 68 data fields. The format is documented in Tables 1-1 to 1-3. Table 1-1. TMY3 data header (line 1) Field 1 2 3 4 5 6 7
Element
Unit or Description USAF number Quote delimited Two-letter U.S. Postal abbreviation Hours from Greenwich, negative west Decimal degree Decimal degree Meter
Site identifier code Station name Station state Site time zone Site latitude Site longitude Site elevation
Table 1-2. TMY3 data header (line 2) Field 1-68
Element Data field name and units (abbreviation or mnemonic)
3
Table 1-3. TMY3 data fields (lines 3-8762) Field 1 2
Element Date Time
Unit or Range MM/DD/YYYY HH:MM
Resolution ---
3
Hourly extraterrestrial radiation on a horizontal surface
Watt-hour per square meter
1 Wh/m
2
4
Hourly extraterrestrial radiation normal to the sun
Watt-hour per square meter
1 Wh/m
2
5
Global horizontal irradiance
Watt-hour per square meter
1 Wh/m
2
6
Global horizontal irradiance source flag Global horizontal irradiance uncertainty
A-H, ?
--
Percent
1%
8
Direct normal irradiance
Watt-hour per square meter
1 Wh/m
9
Direct normal irradiance source flag Direct normal irradiance uncertainty
A-H, ?
--
Percent
1%
7
10
11
Diffuse horizontal irradiance
Watt-hour per square meter
1 Wh/m
12
Diffuse horizontal irradiance source flag Diffuse horizontal irradiance uncertainty
A-H, ?
--
Percent
1%
13
4
2
2
Description Date of data record Time of data record (local standard time) Amount of solar radiation received on a horizontal surface at the top of the atmosphere during the 60-minute period ending at the timestamp Amount of solar radiation received on a surface normal to the sun at the top of the atmosphere during the 60minute period ending at the timestamp Total amount of direct and diffuse solar radiation received on a horizontal surface during the 60-minute period ending at the timestamp See Table 1-4 Uncertainty based on random and bias error estimates – see NSRDB User’s Manual (Wilcox, 2007b) Amount of solar radiation (modeled) received in a collimated beam on a surface normal to the sun during the 60minute period ending at the timestamp See table 1-4 Uncertainty based on random and bias error estimates – see NSRDB User’s Manual (Wilcox, 2007b) Amount of solar radiation received from the sky (excluding the solar disk) on a horizontal surface during the 60-minute period ending at the timestamp See Table 1-4 Uncertainty based on random and bias error estimates – see NSRDB User’s Manual (Wilcox, 2007b)
14
Global horizontal illuminance
Lux
100 lx
15
Global horizontal illuminance source flag Global horizontal illuminance uncertainty Direct normal illuminance
I, ?
--
Percent
1%
Lux
100 lx
Direct normal illuminance source flag Direct normal illuminance uncertainty Diffuse horizontal illuminance
I, ?
--
Percent
1%
Lux
100 lx
Diffuse horizontal illuminance source flag Diffuse horizontal illuminance uncertainty Zenith luminance
I, ?
--
Percent
1%
Candela per square meter
10 cd/m
Zenith luminance source flag Zenith luminance uncertainty
I, ?
--
Percent
1%
26
Total sky cover
Tenths of sky
1 tenth
27
Total sky cover flag (source) Total sky cover flag (uncertainty) Opaque sky cover
16 17
18 19 20
21 22 23
24 25
28 29
Average total amount of direct and diffuse illuminance received on a horizontal surface during the 60-minute period ending at the timestamp See Table 1-4 Uncertainty based on random and bias error estimates – see section 2.10) Average amount of direct normal illuminance received within a 5.7° field of view centered on the sun during 60minute period ending at the timestamp See Table 1-4 Uncertainty based on random and bias error estimates – see section 2.10) Average amount of illuminance received from the sky (excluding the solar disk) on a horizontal surface during the 60-minute period ending at the timestamp See Table 1-4
2
Uncertainty based on random and bias error estimates – see section 2.10) Average amount of luminance at the sky's zenith during the 60minute period ending at the timestamp See Table 1-4 Uncertainty based on random and bias error estimates – see section 2.10) Amount of sky dome covered by clouds or obscuring phenomena at the time indicated See Table 1-5 See Table 1-6
Tenths of sky
1 tenth
5
Amount of sky dome covered by clouds or obscuring phenomena that prevent observing the sky or higher cloud layers at the time indicated
30 31 32 33 34 35 36 37 38 39 40 41 42 43 44
45 46 47 48 49 50 51 52
Opaque sky cover flag (source) Opaque sky cover flag (uncertainty) Dry-bulb temperature Dry-bulb temperature flag (source) Dry-bulb temperature flag (uncertainty) Dew-point temperature Dew-point temperature flag (source) Dew-point temperature flag (uncertainty) Relative humidity Relative humidity flag (source) Relative humidity flag (uncertainty) Station pressure Station pressure flag (source) Station pressure flag (uncertainty) Wind direction
Wind direction flag (source) Wind direction flag (uncertainty) Wind speed Wind speed flag (source) Wind speed flag (uncertainty) Horizontal visibility
See Table 1-5 See Table 1-6 Degree C
0.1°
Dry-bulb temperature at the time indicated See Table 1-5 See Table 1-6
Degree C
0.1°
Dew-point temperature at the time indicated See Table 1-5 See Table 1-6
Percent
1%
Relative humidity at the time indicated See Table 1-5 See Table 1-6
Millibar
1 mbar
Station pressure at the time indicated See Table 1-5 See Table 1-6
Degrees from north (360° = north; 0° = undefined, calm)
10°
Wind direction at the time indicated
See Table 1-5 See Table 1-6 Meter/second
0.1 m/s
Wind speed at the time indicated See Table 1-5 See Table 1-6
Meter*
1m
Horizontal visibility flag (source) Horizontal visibility flag (uncertainty)
6
Distance to discernable remote objects at the time indicated (7777 = unlimited) See Table 1-5
53
Ceiling height
54
Ceiling height flag (source) Ceiling height flag (uncertainty) Precipitable water
55 56
57 58 59
60 61 62 63 64 65
Precipitable water flag (source) Precipitable water flag (uncertainty) Aerosol optical depth, broadband Aerosol optical depth, broadband flag (source) Aerosol optical depth, broadband flag (uncertainty) Albedo Albedo flag (source) Albedo flag (uncertainty) Liquid precipitation depth
66
Liquid precipitation quantity
67
Liquid precipitation depth flag (source) Liquid precipitation depth flag (uncertainty)
68
Meter*
1m
Height of the cloud base above local terrain (77777 = unlimited) See Table 1-5 See Table 1-6
Centimeter
0.1 cm
The total precipitable water contained in a column of unit cross section extending from the earth's surface to the top of the atmosphere See Table 1-5 See Table 1-6
[unitless]
0.001
The broadband aerosol optical depth per unit of air mass due to extinction by the aerosol component of the atmosphere See Table 1-5 See Table 1-6
[unitless]
0.01
The ratio of reflected solar irradiance to global horizontal irradiance See Table 1-5 See Table 1-6
Millimeter*
1 mm
Hour*
1 hr
The amount of liquid precipitation observed at the indicated time for the period indicated in the liquid precipitation quantity field The period of accumulation for the liquid precipitation depth field See Table 1-5 See Table 1-6
*Value of -9900 indicates the measurement is missing.
7
Table 1-4. Solar radiation and illuminance source flags Flag
Definition
A*
Post-1976 measured solar radiation data as received from NCDC or other sources
B*
Same as “A” except the global horizontal data underwent a calibration correction
C*
Pre-1976 measured global horizontal data (direct and diffuse were not measured before 1976), adjusted from solar to local time, usually with a calibration correction
D*
Data derived from the other two elements of solar radiation using the relationship, global = diffuse + direct x cosine(zenith)
E
Modeled solar radiation data using inputs of observed sky cover (cloud amount) and aerosol optical depths derived from direct normal data collected at the same location
F
Modeled solar radiation data using interpolated sky cover and aerosol optical depths derived from direct normal data collected at the same location
G
Modeled solar radiation data using observed sky cover and aerosol optical depths estimated from geographical relationships
H
Modeled solar radiation data using interpolated sky cover and estimated aerosol optical depths
I
Modeled illuminance or luminance data derived from measured or modeled solar radiation data
?
Source does not fit any of the above categories. Used for nighttime values and missing data
*Flags A through D are not used in the TMY3 data set, but are included here for consistency and completeness.
Table 1-5. Meteorological source flags Flag
Definition
A
Data as received from NCDC, converted to SI units
B
Linearly interpolated
C
Non-linearly interpolated to fill data gaps from 6 to 47 hours in length
D
Not used
E
Modeled or estimated, except: precipitable water, calculated from radiosonde data; dew point temperature calculated from dry bulb temperature and relative humidity; and relative humidity calculated from dry bulb temperature and dew point temperature
F
Precipitable water, calculated from surface vapor pressure; aerosol optical depth, estimated from geographic correlation
?
Source does not fit any of the above. Used mostly for missing data
8
Table 1-6. Meteorological uncertainty flags Flag
Definition
1–6
Not used
7
Uncertainty consistent with NWS practices and the instrument or observation used to obtain the data
8
Greater uncertainty than 7 because values were interpolated or estimated
9
Greater uncertainty than 8 or unknown
0
Not definable
1.5 TMY3 Site Selection While planning the TMY3 update project, we considered two possible scenarios for populating the data set: •
Create a TMY based on the 30 most recent years of data (1976–2005) for only the 239 sites common to both the old NSRDB and the NSRDB update
•
Create a TMY based on the 15 most recent years of data (1991–2005) for approximately 950 sites from the NSRDB update.
To optimize both temporal and spatial considerations, the TMY3 combines these scenarios so that the 30-year data were used at sites where they were available and the 15-year data were used for the remaining sites. The TMY3 sites are listed in Appendix A. The sites in the 1991-2005 NSRDB were chosen based on data availability rather than geographic location (all sites meeting minimum data criteria were included). For this reason, in the both the NSRDB update and the TMY3, sites may occur in close proximity, for example in major metropolitan areas. The period of record of the source data set has an effect on the ability of the TMY algorithm to select a typical year (ASHRAE 2004). Because of differences in the source period of record for sites, this information has been documented in Appendix A. See Section 2.8 for a discussion of the effect of available data on the TMY statistics. Note that for the 30-year period, the pool is reduced to 24 years at best because of the removal of candidate years due to volcanic eruptions (see Section 2.4). For the 15-year period, the pool is reduced to 12 years at best for the same reason. Although some studies have shown than as few as five years may suffice for capturing much of the statistical character of a climate (Vignola 1993), we implemented a more conservative constraint on the size of the source data pool: No stations with less than a ten-year data pool were included in the TMY3 data set. The NSRDB update subdivided stations by class: Class I sites are those with the lowest uncertainty data, Class II sites have higher uncertainty data, and Class III sites have an incomplete period of record. When creating TMY data sets, we did not consider the class of the site or the uncertainty of the source data. Further, although Class III sites have gaps in the data, the TMY algorithm was able to produce a typical year for many Class III sites using months of 9
data without gaps. To aid users in analyzing the quality of the data, we have included the station’s quality classification from the NSRDB update in Appendix A . The NSRDB classification subdivided stations according to the following algorithm: •
If any data were missing from the key fields (solar, temperature, humidity, station pressure, wind speed, aerosols, and precipitable water), the station received a Class III designation. The algorithm distinguishes between Class I and Class II stations by examining the uncertainty for each hourly modeled value in the global field. If less than 25% of the data for the 15-year period of record exceeds an uncertainty of 11%, the station received a Class I designation. Otherwise, it received a Class II designation. Although the 11% threshold between high and low uncertainty may seem arbitrary, based on the uncertainty calculations in the NSRDB update, this value easily discriminates between the data modeled with good human-observed or satellite-derived cloud cover and the filled or statistically derived cloud cover.
Although the TMY data set likely does not have the same distribution of quality flags for a station as the entire period of record (it could be better or worse), the NSRDB classification scheme is valid for estimating the quality of a station’s TMY. This follows because the NSRDB classification is relevant to the quality of the long-term statistics used to choose the data that ultimately represent the site’s climate in the TMY. Although the Class III designation focused on data completeness rather than data quality, the data from most Class III stations were similar in quality to those of Class II stations and should be considered comparable when considering data quality in the TMY3 data set. The geographical coordinates listed in Appendix A may not exactly correspond with the coordinates of the meteorological station. This is because if a site in the NSRDB update held measured data from a nearby solar measurement site, the NSRDB site took on the coordinates of the solar measurement station. See the NSRDB Users’ Manual for additional information (Wilcox 2007b). (Measured solar data from the 1991-2005 NSRDB Update were not used in the TMY3 production in order to provide a more consistent data set.)
2 Procedures for Developing TMY3 The TMY2 andTMY3 data were created based on the procedures developed by Sandia National Laboratories (Hall et al. 1978) to create the original TMYs from the 1952-1975 SOLMET/ERSATZ data. Modifications to the Sandia method were made to better optimize the weighting of the indices, to provide preferential selection for months with measured solar radiation data (in the TMY2 data set), and to account for missing data. This section begins by summarizing the Sandia method, and then it discusses departures from the Sandia method that were used to create the TMY3 data. 2.1 Sandia Method The Sandia method is an empirical approach that selects individual months from different years of the period of record. For example, in the case of the NSRDB that contains 30 years of data, all 30 Januarys are examined, and the one judged most typical is selected to be included in the 10
TMY. The other months of the year are treated in a like manner, and then the 12 selected typical months are concatenated to form a complete year. Because adjacent months in the TMY may be selected from different years, discontinuities at the month interfaces are smoothed for 6 hours on each side. The Sandia method selects a typical month based on nine daily indices consisting of the maximum, minimum, and mean dry bulb and dew point temperatures; the maximum and mean wind velocity; and the total global horizontal solar radiation. Final selection of a month includes consideration of the monthly mean and median and the persistence of weather patterns. The process may be considered a series of steps. Step 1 - For each month of the calendar year, five candidate months with cumulative distribution functions (CDFs) for the daily indices that are closest to the long-term (30 years for the NSRDB) CDFs are selected. The CDF gives the proportion of values that are less than or equal to a specified value of an index. Candidate monthly CDFs are compared to the long-term CDFs by using the following Finkelstein- Schafer (FS) statistics (Finkelstein and Schafer 1971) for each index. n
FS = ( 1 )∑ δ i n i =1
where δi n
= absolute difference between the long-term CDF and the candidate month CDF at xi = the number of daily readings in a month.
Four CDFs for global horizontal solar radiation for the month of June are shown in Figure 2-1. Using the FS statistic and comparing to the long-term, the CDF for June of 1981 compared the best and the CDF for June of 1989 compared the worst. Even though it was not the best month with respect to the long-term CDF, June of 1962 was selected for the TMY2. This was a consequence of additional selection steps described in the following paragraphs.
11
Figure 2-1. Cumulative distribution functions for June global horizontal solar radiation for Boulder, Colorado (example from TMY2 processing).
Because some of the indices are judged more important than others, a weighted sum (WS) of the FS statistics is used to select the five candidate months that have the lowest weighted sums. WS = ΣwiFSi where wi FSi
= weighting for index = FS statistic for index.
Step 2 - The five candidate months are ranked with respect to closeness of the month to the longterm mean and median. Step 3 - The persistence of mean dry bulb temperature and daily global horizontal radiation are evaluated by determining the frequency and length of runs of consecutive days with values above and below fixed long-term percentiles. For mean daily dry bulb temperature, runs above the 67th percentile (consecutive warm days) and below the 33rd percentile (consecutive cool days) were determined. For global horizontal radiation, the runs below the 33rd percentile (consecutive low radiation days) were determined. The persistence criteria excludes the month with the longest run, the month with the most runs, and the month with zero runs. The persistence data are used to select from the five candidate months the month to be used in the TMY. The highest-ranked candidate month from Step 2 that meets the persistence criteria is used in the TMY. 12
Step 4 - The 12 selected months were concatenated to make a complete year and discontinuities at the month interfaces were smoothed for 6 hours each side using curve fitting techniques. 2.2 Weighting and Index Modifications for TMY2 and TMY3 The weighting for each index plays a role in the selection of the typical months. Ideally, one would select a month that had FS statistics for each index that were better than all the other months. In practice, this is unlikely because the months might be typical with respect to some of the indices, but not others. By weighting the FS statistics, the relative importance and sensitivity of the indices may be taken into account. The Sandia weighting values and the weighting values used for the NSRDB TMY2 and TMY3 data sets are compared in Table 2-1.
Table 2-1. Weighting values for FS statistics Index
Sandia Method
NSRDB TMY
Max Dry Bulb Temp
1/24
1/20
Min Dry Bulb Temp
1/24
1/20
Mean Dry Bulb Temp
2/24
2/20
Max Dew Point Temp
1/24
1/20
Min Dew Point Temp
1/24
1/20
Mean Dew Point Temp
2/24
2/20
Max Wind Velocity
2/24
1/20
Mean Wind Velocity
2/24
1/20
Global Radiation
12/24
5/20
Direct Radiation
Not Used
5/20
For the TMY2 and TMY3 data, an index for direct normal radiation was added. This improves the agreement between annual direct normal radiation for the TMY and the 30-year annual average by about a factor of 2 (based on 20 geographically representative NSRDB stations). When only global horizontal radiation is used for the solar index, the TMY annual direct radiation values for the 20 stations were within 4% (95% confidence level) of the 30-year annual average. Using both global horizontal and direct radiation indices reduced the differences to 2%, with no adverse effect on global horizontal radiation comparisons. We changed the weightings for dry bulb and dew point temperatures slightly to give more emphasis to dry bulb and dew point temperatures and less to wind velocity, which is of less importance for solar energy conversion systems and buildings. The TMY weightings are not 13
appropriate for creating a typical wind data set for use with wind energy conversion systems, and these data sets are not intended for wind energy applications. The relative weights between solar and the other elements were not found to be particularly sensitive. As an indicator, annual heating and cooling degree days (base 18.3°C) were compared for the TMY2 data and the 30-year period for the 20 stations. With the selected solar weighting of 50% (global and direct), annual heating degree days for the TMY2 data were within 5% (95% confidence level) of the 30-year annual average. As an extreme, reducing the solar weighting to zero only reduced the differences to within 2.5%. Differences between the TMY2 annual averages and the 30-year averages for cooling degree days were within 9%, for both 0% and 50% solar weightings. As a consequence of adding the index for direct normal radiation, the persistence check in Step 3 was modified to determine the frequency and run length below the 33rd percentile (consecutive low radiation days) for daily values of direct normal radiation. This information, along with that for the other persistence indices, was then used to select the month satisfying the persistence criteria. 2.3 Changes from TMY2 to TMY3 A few changes from the TMY2 procedures were required to accommodate the use of 1991-2005 NSRDB data in TMY3 data derived from only a 15-year period. For TMY2 data, months with measured solar radiation data were given preferential ranking for selection as a typical month. TMY3 procedures did not include this criterion because only modeled solar radiation data were included in the TMY3 data in order to provide more consistent solar radiation values. For the TMY3 data, using only 15 years instead of 30 years to select a candidate month required that the persistence checks be relaxed to ensure that a candidate month would be selected. For the TMY2 data, a candidate month is excluded from further consideration if it is the month with the most runs. For TMY3, a candidate month is only excluded if it has more runs than every other candidate month. Consequently, if two candidate months tie for the most runs, neither is eliminated by the TMY3 procedure, whereas the TMY2 procedure would eliminate both candidate months. As an additional step, if the TMY3 persistence procedure eliminated all candidate months, persistence was ignored for TMY3 and a month was selected from the candidate months that was closest to the long term mean and median. This ensured the selection of a typical month for TMY3 using 15-year or shorter data sets. No TMY for a site was produced if the pool of data was less than 10 years. 2.4 El Chichón and Mount Pinatubo Years The volcanic eruptions of El Chichón in Mexico in March 1982 and Mount Pinatubo in the Philippines in June 1991 injected large amounts of aerosols into the stratosphere. The aerosols spread northward and circulated around the earth. This phenomenon noticeably decreased the amount of solar radiation reaching the United States during May 1982 until December 1984 due to El Chichón and from June 1991 to December 1994 due to Pinatubo, after which the effects of the aerosols diminished (Stoffel, 1993). Consequently, these months were not used in any of the TMY procedures because they were considered atypical.
14
2.5 Leap Years TMY2 and TMY3 files do not include data for February 29. Consequently, data for February 29 were not used in leap year Februarys to determine their candidate month CDFs. However, to maximize the use of available data, data for February 29 were included for determining the longterm CDFs. 2.6 Month Interface Smoothing We used linear curve-fitting techniques to remove discontinuities created by concatenating months from different years to form the TMY2 and TMY3 data sets. These techniques were applied for 6 hours on each side of the month interfaces for dry bulb temperature, dew point temperature, wind speed, wind direction, atmospheric pressure, and precipitable water. Relative humidity for 6 hours on each side of the month interfaces was calculated using psychometric relationships (ASHRAE 1993) and curve-fitted values of dry bulb temperature and dew point temperature. 2.7 Allowance for Missing Data The NSRDB has no missing solar radiation data for the sites used for TMY production, but meteorological data are missing for some stations and months for the 1961-1990 period. Consequently, when creating the TMY2 data, procedures were adopted to account for missing meteorological data. These procedures are documented in the TMY2 data manual (Marion, et al. 1995). Similar data procedures were developed for filling the 1991-2005 NSRDB data. For the TMY3 data, these procedures (Wilcox, 2007b) were used to fill missing data for the 1976-1990 period. Hence, in the TMY3 update, there was no need for additional data filling as part of the TMY3 algorithm. 2.8 TMY3 Process Development and Quality Control To help guide our development and process validation for the TMY3, we re-created a 1961–1990 TMY with the updated software using data from the TD3282 NSRDB data set distributed by the National Climatic Data Center. Missing meteorological fields were filled according to methods used for the 1991-2005 NSRDB update. In addition, to evaluate the effects of drawing from differing periods of time for the input data set, we compared each of the following year-span subgroups using the original 1961–1990 TMY data set as a benchmark (Wilcox, et al., 2008). •
1961–1990 (30 years for evaluating software algorithm changes)
•
1976–2005 (for evaluating an updated TMY from a 30-year data set)
•
1991–2005 (for evaluating an updated TMY from a 15-year data set)
•
1998–2005 (for evaluating an updated TMY from an 8-year data set).
The TMY software was run on each data set to create TMYs for the 233 sites common to all subgroups (several sites among the 239 in the TMY2 data set did not have sufficient data for this analysis) . We calculated a mean value for each parameter by site for each sub-group TMY. Although means are only a minor consideration in the TMY algorithm, they are one characteristic of climate and are a simple method of detecting large shifts or errors. The differences in means between the original 1961-1990 TMY and the subgroups for direct normal are shown in Figure 2-2. Separate plot curves are shown for each year-span subgroup. 15
100
50
W/m
2
0
-50
-100
-150 1
15 29 43 57 71 85 99 113 127 141 155 169 183 197 211 225
Stations 61-90 delta mean
75-05 delta mean
91-05 delta mean
98-05 delta mean
Figure 2-2. Direct normal delta mean (new minus original 1961–1990) for each evaluation station.
The data in this plot show the least scatter when comparing the original and the re-created 1961– 1990 TMYs. For each of the remaining TMYs in order (1976–2005, 1991–2005, and 1998– 2005), increasing scatter is evident compared with the original 1961–1990 TMY. These results are consistent with findings that smaller source data sets are less likely to accurately typify the climate. Also conspicuous are data to the far left in each figure, which correspond to stations in Alaska, where several sites show anomalous values for the 1998-2005 subgroup. At the far right are stations in Hawaii, where other anomalies occur. Further study is required to understand these larger departures. Tables 2-1 and 2-2 hold summary data showing the means and standard deviations for these comparison data sets. The statistics are found by determining the mean of sunup data for the solar parameters and the mean of all data for meteorological parameters. Biases are determined as the test TMY data set minus the original 61-90 TMY. This information may give the user some indication of the increased uncertainty in the data with the smaller source data sets.
16
Table 2-2. Bias (test data minus original 61-90 TMY)
Parameter Direct W/m2 Global W/m2 Dry Bulb °C Dew Point °C Wind Speed m/s
’61–’90 -5.9 -4.0 0.07 0.08 0.02
’76–’05 -1.1 -5.7 0.39 0.33 -0.1
’91–’05 -7.9 -15.2 0.77 0.81 -0.3
’98–’05 -1.7 -11.7 0.94 1.08 -0.4
Table 2-3. Standard deviations
Parameter Direct W/m2 Global W/m2 Dry Bulb °C Dew Point °C Wind Speed m/s
’61–’90 ’76–’05 ’91–’05 ’98–’05 6.7 2.8 0.22 0.28 0.12
11.9 5.3 0.37 0.43 0.20
21.0 10.0 0.49 0.57 0.30
32.5 15.1 0.77 0.82 0.34
To further compare and validate the process, we looked at the frequency of each year’s selection for the year-span subgroups. Figure 2-3 shows the comparison between the year selection frequencies of the original 1961–1990 TMY and the re-created 1961–1990 TMY.
0.07
Frequency of Occurrence
0.06
0.05
0.04
0.03
0.02
0.01
1990
1988 1989
1987
1986
1984 1985
1983
1982
1981
1979 1980
1978
1977
1975 1976
1974
1973
1971 1972
1970
1969
1968
1966 1967
1965
1964
1962 1963
1961
0
Year Original
Re-run
Figure 2-3. Year selection frequency comparison between original 1961–1990 and re-created 1961– 1990 TMYs.
17
Although some differences are apparent, the overall mix of the year selection closely correlates, which we feel validates the current TMY production software. Note that years corresponding to the eruptions of volcanoes El Chichón and Mount Pinatubo (1982–1984 and 1992–1994, respectively) are not represented among the selected years. These years are explicitly excluded by the TMY algorithm because the effects of increased aerosols on solar radiation for those years are considered atypical. Figure 2-4 shows the year selection frequency for the 1976–2005 TMY. Note that the updated years 1991–2005 are under-represented in this data set (at about half the rate of 1976–1990). Given that both groups (1976–1990 and 1991–2005) have an equal 15-year span, further study is required to determine why the algorithm prefers data from the earlier years. Figures 2-5 shows the year selection frequency for the TMYs derived from the 1991–2005 data sets. Note that, although the years 1999–2005 are proportioned similarly between these two data sets, 1998 is the least frequent year selected from years 1998–2005 in the former and the most frequent in the latter.
0.09
0.08
Frequency of Occurence
0.07
0.06
0.05
0.04
0.03
0.02
0.01
2005
2004
2003
2002
2001
2000
1999
1998
1997
1996
1995
1994
1993
1992
1991
1990
1989
1988
1987
1986
1985
1984
1983
1982
1981
1980
1979
1978
1977
1976
0
Year
Figure 2-4. Year selection frequency for 30-year 1976–2005 TMY.
18
0.12
Frequency of Occurrence
0.1
0.08
0.06
0.04
0.02
0 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005
Year
Figure 2-5. Year selection frequency for 15-year 1991–2005 TMY.
2.9 Calculation of Illuminance Data To facilitate lighting and energy analysis of buildings, hourly values for global horizontal illuminance, direct normal illuminance, and diffuse horizontal illuminance in units of lux, and zenith luminance in units of cd/m2 were added to the TMY3 data. These elements were calculated using luminous efficacy models developed by Perez et al. (1990). Inputs to the models are direct normal radiation, diffuse horizontal radiation, solar zenith angle, and dew point temperature. 2.10 Assignment of Source and Uncertainty Flags With the exception of extraterrestrial horizontal and extraterrestrial direct radiation, each data value was assigned a source and uncertainty flags. The source flag indicates whether the data were measured, modeled, or missing, and the uncertainty flag provides an estimate of the uncertainty of the data. Source and uncertainty flags for extraterrestrial horizontal and extraterrestrial direct radiation are not provided because these elements were calculated using equations considered to give values without significant error for this application. Usually, the source and uncertainty flags are the same as the ones in the NSRDB, from which the TMY files were derived. In the case of the TMY3 data files, the uncertainties are expressed as plus-minus percent rather than the coded uncertainty used in the TMY2 files. Uncertainty values apply to the data with respect to actual values at the time stamp, and not to how “typical” a particular hour is for a future month and day. The uncertainty values represent the plus or minus interval about the data value that contains the true value 95% of the time. 19
The uncertainty assigned to modeled solar radiation data includes primarily the bias error in the model and, to a lesser extent, the random error component, which could be several times larger for partly cloudy skies (Wilcox, 2007b). For partly cloudy skies, an hour can be composed of large or small amounts of sunshine, depending on whether the sun is mostly free of the clouds or occluded by the clouds. Consequently, modeled hourly values may depart significantly from true values for partly cloudy skies. The uncertainty assigned to modeled solar radiation data represents the average uncertainty for a large number of model estimates (such as for a month). When averaging large data sets, random errors tend to cancel, leaving only the bias error. Uncertainties for values of illuminance and luminance were determined by taking the root-sumsquare of the two main sources of error: (1) uncertainty of the solar radiation element (global horizontal, direct normal, or diffuse horizontal radiation) from which the illuminance or luminance element is derived, and (2) uncertainty of the model estimate. The uncertainty of the model estimates are based on the evaluation presented by Perez et al. (1990) for six test stations. To be conservative, the following model mean bias errors for the stations with the largest errors were used: •
1.2% for global horizontal illuminance
•
1.6% for direct normal illuminance
•
2.3% for diffuse horizontal illuminance
•
1.2% for zenith luminance.
The uncertainty of the illuminance data value was then determined as the root-sum-square of the model uncertainty and solar radiation element uncertainty (for zenith luminance, the model value was root-sum-squared with the global radiation uncertainty). The use of the bias error, instead of bias and random error, is consistent with the approach in the above paragraph concerning the assignment of uncertainty values to modeled solar radiation elements. Consequently, it also has the same implications: The assigned uncertainty is representative of the average uncertainty for a large number of model estimates (such as for a month).. For meteorological elements, relative uncertainties from the NSRDB were used. These uncertainties do not portray a quantitative evaluation of the uncertainty of the meteorological elements, but rather give relative uncertainties based on the data and the manner in which they were derived (NSRDB-Vol. 1 1992). The source and uncertainty flags for the solar radiation, illuminance, and meteorological elements are presented in Tables 1-4 through 1-6.
20
3 References ASHRAE (1993). 1993 ASHRAE Handbook: Fundamentals. Atlanta, GA: American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. ASHRAE - American Society of Heating, Refrigerating, and Air-Conditioning Engineers (2004). Sources of Uncertainty in the Calculation of the Design Weather Conditions in the ASHRAE Handbook of Fundamentals. Research Report RP-1171. Finkelstein, J.M.; Schafer, R.E. (1971). “Improved Goodness-of-Fit Tests.” Biometrika, 58(3), pp. 641-645. Hall, I.; Prairie, R.; Anderson, H.; Boes, E. (1978). Generation of Typical Meteorological Years for 26 SOLMET Stations. SAND78-1601. Albuquerque, NM: Sandia National Laboratories. Marion, W., Urban, K., Users Manual for TMY2s-Typical Meteorological Years Derived from the 1961–1990 National Solar Radiation Data Base, NREL/TP-463-7668, Golden, CO: National Renewable Energy Laboratory, 1995. NSRDB - Vol. 1 (1992). User’s Manual - National Solar Radiation Data Base (1961-1990). Version 1.0. Golden, CO: National Renewable Energy Laboratory and Asheville, NC: National Climatic Data Center. Perez, R.; Ineichen, P.; Seals, R.; Michalsky, J.; Stewart, R. (1990). “Modeling Daylight Availability and Irradiance Components from Direct and Global Irradiance.” Solar Energy, 44(5), pp. 271-289. Stoffel, T.; Nelson, D. (1993). Effects of the Mt. Pinatubo Volcanic Eruption on Solar Radiation Resources near Denver, Colorado - Some Preliminary Analyses. Burley, S. M.; Arden, M. E., eds. Solar '93: Proceedings of the 1993 Annual Conference of the American Solar Energy Society, 22-28 April 1993, Washington, DC. Boulder, CO: American Solar Energy Society pp. 489-494. Acc No. 13482. Vignola, F., McDaniels, K. (1993) Value of long-term solar radiation data. Proceedings of the Solar ’93 Conference, American Solar Energy Society. Boulder, CO: American Solar Energy Society (ASES). Wilcox, S.; Anderberg, M.; George, R.; Marion, W.; Myers, D.; Renne, D.; Lott, N.; Whitehurst, T.; Beckman, W.; Gueymard, C.; Perez, R.; Stackhouse, P.; Vignola, F. (2007). Completing Production of the Updated National Solar Radiation Database for the United States. CampbellHowe, R., ed. Proceedings of the Solar 2007 Conference, 8-12 July 2007, Cleveland, Ohio (CDROM). Including Proceedings of 36th ASES Annual Conference, Proceedings of 32nd National Passive Solar Conference, and Proceedings of the 2nd Renewable Energy Policy and Marketing Conference. Boulder, CO: American Solar Energy Society (ASES) 8 pp.; NREL Report No. CP581-41511. Wilcox, S. (2007). National Solar Radiation Database 1991–2005 Update: User’s Manual. 472 pp.; NREL Report No. TP-581-41364. 21
Wilcox, S.; Marion, W. (2008). Development of an Updated Typical Meteorological Year Data Set for the United States. Campbell-Howe, R., ed. Proceedings of the Solar 2008 Conference, 3-8 May 2008, San Diego, CA (CD-ROM. Boulder, CO: American Solar Energy Society (ASES).
22
Appendix A – TMY3 Stations Table A-1 lists all stations in the TMY3 data set, ordered by state and then site name. The table columns are described below: • •
• • • • • • •
USAF – The United States Air Force code used by the National Climatic Data Center for station identification (identical to the station identification numbers in the 1991-2005 NSRDB Update) Station Name – The measurement station name. These names are identical to those used in the 1991-2005 NSRDB update. In some cases, the name of a solar measurement site is included in the station name in square brackets. This naming convention is retained for conformity with the NSRDB update. (No measured solar data from the NSRDB update are used in the TMY3 data set.) State – The two-character U.S. Postal Service state/possession code including Puerto Rico (PR) and Guam (GU) Latitude – Site latitude (decimal degrees) Longitude – Site longitude (decimal degrees) Time Zone – Number of hours from Greenwich time (negative west) Elevation – Elevation of the station (meters) NSRDB Class – The station classification used by the 1991-2005 NSRDB Update (see Section 1.5). Pool Years – The minimum number of years from which TMY candidate months were pulled (see Section 1.5).
Table A-1. TMY3 station information AK AK AK AK
Latitude 51.883 67.100 68.133 61.183
Longitude -176.650 -157.850 -151.733 -150.000
Time Zone -10 -9 -9 -9
Elevation 5 88 657 35
NSRDB Class III II III II
Pool Years 10 12 11 24
AK
61.217
-149.850
-9
42
II
12
AK AK AK AK
61.250 61.583 55.050 62.650
-149.800 -159.533 -131.567 -160.183
-9 -9 -9 -9
59 26 33 99
II III II III
12 11 24 10
AK
71.320
-156.620
-9
10
II
24
AK AK AK AK AK AK AK AK
60.783 66.917 64.000 60.817 61.417 62.883 55.200 60.500
-161.833 -151.517 -145.717 -152.300 -149.517 -149.833 -162.717 -145.500
-9 -9 -9 -9 -9 -9 -9 -9
38 196 386 12 30 381 29 12
II II II II III II II II
24 24 24 12 11 12 24 12
USAF
Station Name
State
704540 701718 701625 702730
ADAK NAS AMBLER ANAKTUVUK PASS ANCHORAGE INTL AP ANCHORAGE MERRILL FIELD ANCHORAGE/ELMENDORF ANIAK AIRPORT ANNETTE ISLAND AP ANVIK BARROW W POST-W ROGERS ARPT [NSA - ARM] BETHEL AIRPORT BETTLES FIELD BIG DELTA ALLEN AAF BIG RIVER LAKE BIRCHWOOD CHULITNA COLD BAY ARPT CORDOVA
702735 702720 702320 703980 702075 700260 702190 701740 702670 702986 702746 702606 703160 702960
23
USAF 700637 703210 704890 702084 702610 702650 701940 702040 702710 703670 702495 702647 703410 702607 702186 702225 703884 703400 703810 703855 702590 703950 703260 703500 701330 702725 702310 702185 703430 702460 702600 702000 702910 702740 703860 701043 703330 702005 703165 702035 700197 702770 704140 701195 703710
Station Name DEADHORSE DILLINGHAM (AMOS) DUTCH HARBOR EMMONAK FAIRBANKS INTL ARPT FAIRBANKS/EIELSON A FORT YUKON GAMBELL GULKANA INTERMEDIATE FIELD GUSTAVUS HAYES RIVER HEALY RIVER AIRPORT HOMER ARPT HOONAH HOOPER BAY HUSLIA HYDABURG SEAPLANE ILIAMNA ARPT JUNEAU INT'L ARPT KAKE SEAPLANE BASE KENAI MUNICIPAL AP KETCHIKAN INTL AP KING SALMON ARPT KODIAK AIRPORT KOTZEBUE RALPH WEIN MEMORIAL LAKE HOOD SEAPLANE MCGRATH ARPT MEKORYUK MIDDLETON ISLAND AUT MINCHUMINA NENANA MUNICIPAL AP NOME MUNICIPAL ARPT NORTHWAY AIRPORT PALMER MUNICIPAL PETERSBURG POINT HOPE (AWOS) PORT HEIDEN SAINT MARY`S (AWOS) SAND POINT SAVOONGA SELAWIK SEWARD SHEMYA AFB SHISHMAREF (AWOS) SITKA JAPONSKI AP
AK AK AK AK AK AK AK AK
Latitude 70.200 59.050 53.900 62.783 64.817 64.650 66.567 63.783
Longitude -148.483 -158.517 -166.550 -164.500 -147.850 -147.100 -145.267 -171.750
Time Zone -9 -9 -9 -9 -9 -9 -9 -9
Elevation 23 29 4 4 133 167 136 8
NSRDB Class II II II II II II III III
Pool Years 12 12 12 12 24 12 10 10
AK
62.150
-145.450
-9
478
II
24
AK AK AK AK AK AK AK AK AK AK AK AK AK AK AK
58.417 61.983 63.883 59.650 58.083 61.517 65.700 55.200 59.750 58.350 56.967 60.583 55.367 58.683 57.750
-135.700 -152.083 -149.017 -151.483 -135.450 -166.150 -156.383 -132.833 -154.917 -134.583 -133.950 -151.233 -131.717 -156.650 -152.500
-9 -9 -9 -9 -9 -9 -9 -9 -9 -9 -9 -9 -9 -9 -9
12 305 396 27 6 6 55 0 57 4 0 26 23 15 5
II II II II II II III III II II II II II II II
12 12 12 12 12 12 10 11 12 12 12 12 12 24 24
AK
66.883
-162.600
-9
3
II
24
AK AK AK AK AK AK AK AK AK AK AK AK AK AK AK AK AK AK AK AK
61.183 62.950 60.367 59.467 63.883 64.550 64.517 62.967 61.600 56.800 68.350 56.950 62.067 55.317 63.683 66.600 60.117 52.717 66.267 57.050
-149.967 -155.600 -166.267 -146.317 -152.283 -149.100 -165.450 -141.933 -149.083 -132.950 -166.800 -158.617 -163.300 -160.517 -170.500 -160.000 -149.450 174.117 -166.050 -135.367
-9 -9 -9 -9 -9 -9 -9 -9 -9 -9 -9 -9 -9 -9 -9 -9 -9 -10 -9 -9
22 105 15 14 213 109 4 522 71 33 4 29 95 7 17 8 18 31 2 4
III II II II II II II II II II II II II II III III II II II II
12 24 12 12 12 12 24 12 12 12 12 12 12 12 12 11 12 12 12 12
State
24
AK AK AK AK AK
Latitude 59.467 61.717 60.467 57.167 62.317
Longitude -135.300 -157.150 -151.033 -170.217 -150.100
Time Zone -9 -9 -9 -9 -9
Elevation 9 54 34 7 105
NSRDB Class II III III II II
Pool Years 12 11 12 24 24
AK
65.167
-152.100
-9
71
II
12
AK AK AK AK AK AK AK
59.050 63.883 61.133 61.133 60.767 56.483 59.517
-160.400 -160.800 -146.267 -146.350 -148.683 -132.367 -139.633
-9 -9 -9 -9 -9 -9 -9
6 5 38 7 9 13 8
II III II II II II II
12 11 12 12 12 12 24
AL
33.583
-85.850
-6
186
II
12
AL
32.616
-85.433
-6
236
III
12
AL
33.567
-86.750
-6
189
I
24
AL
31.267
-85.717
-6
91
II
12
AL AL
31.233 33.967
-85.433 -86.083
-6 -6
98 173
II III
12 12
AL
34.650
-86.783
-6
190
I
24
AL AL AL
32.383 30.633 30.683
-86.350 -88.067 -88.250
-6 -6 -6
53 8 66
II II I
12 12 24
AL
32.300
-86.400
-6
62
I
24
AL
34.750
-87.600
-6
165
II
12
AL
31.867
-86.017
-6
120
II
12
AL
33.217
-87.617
-6
51
II
12
AR AR
35.733 36.350
-91.650 -94.217
-6 -6
141 395
III III
12 12
AR
33.217
-92.817
-6
77
II
12
AR
36.000
-94.167
-6
381
II
12
AR AR AR AR AR AR AR AR
36.300 35.333 36.267 35.833 34.750 34.917 34.467 34.167
-92.467 -94.367 -93.150 -90.650 -92.233 -92.150 -93.100 -91.933
-6 -6 -6 -6 -6 -6 -6 -6
350 137 419 82 78 103 169 63
III II II II I II II II
12 24 12 12 24 12 12 12
USAF
Station Name
State
703620 703407 702595 703080 702510
SKAGWAY AIRPORT SLEETMUTE SOLDOTNA ST PAUL ISLAND ARPT TALKEETNA STATE ARPT TANANA RALPH M CALHOUN MEM AP TOGIAC VILLAGE AWOS UNALAKLEET FIELD VALDEZ PIONEER FIEL VALDEZ WSO WHITTIER WRANGELL YAKUTAT STATE ARPT ANNISTON METROPOLITAN AP AUBURN-OPELIKA APT BIRMINGHAM MUNICIPAL AP CAIRNS FIELD FORT RUCKER DOTHAN MUNICIPAL AP GADSEN MUNI (AWOS) HUNTSVILLE INTL/JONES FIELD MAXWELL AFB MOBILE DOWNTOWN AP MOBILE REGIONAL AP MONTGOMERY DANNELLY FIELD MUSCLE SHOALS REGIONAL AP TROY AF TUSCALOOSA MUNICIPAL AP BATESVILLE (AWOS) BENTONVILLE (AWOS) EL DORADO GOODWIN FIELD FAYETTEVILLE DRAKE FIELD FLIPPIN (AWOS) FORT SMITH REGIONAL AP HARRISON FAA AP JONESBORO MUNI LITTLE ROCK ADAMS FIELD LITTLE ROCK AFB MEMORIAL FLD PINE BLUFF FAA AP
701780 703606 702070 702756 702750 702757 703870 703610 722287 722284 722280 722269 722268 722285 723230 722265 722235 722230 722260 723235 722267 722286 723448 723444 723419 723445 723447 723440 723446 723407 723403 723405 723415 723417
25
AR AR AR AR AR AR AZ AZ AZ
Latitude 36.367 36.183 36.183 34.600 33.450 36.133 32.950 32.167 33.683
Longitude -94.100 -94.483 -94.117 -91.567 -94.000 -90.917 -111.767 -110.883 -112.083
Time Zone -6 -6 -6 -6 -6 -6 -7 -7 -7
Elevation 415 364 412 68 110 83 446 809 450
NSRDB Class III III III II II II III II II
Pool Years 12 12 10 12 12 12 12 12 12
AZ
31.467
-109.600
-7
1249
II
12
AZ AZ AZ AZ AZ
35.133 35.950 35.267 33.550 36.933
-111.667 -112.150 -113.950 -112.367 -111.450
-7 -7 -7 -7 -7
2132 2065 1033 331 1304
III II II II III
22 12 12 12 10
AZ
33.450
-111.983
-7
337
I
24
AZ AZ AZ AZ
34.650 32.817 33.617 34.267
-112.417 -109.683 -111.917 -110.000
-7 -7 -7 -7
1537 950 460 1954
I III II II
24 10 12 12
AZ
32.133
-110.950
-7
777
I
24
AZ AZ AZ CA CA
35.033 32.667 32.650 41.500 40.983
-110.717 -114.600 -114.617 -120.533 -124.100
-7 -7 -7 -8 -8
1490 63 65 1341 62
II II II II I
12 12 12 12 24
CA
35.433
-119.050
-8
149
I
24
CA CA CA
39.133 37.367 39.300
-121.433 -118.350 -120.717
-8 -8 -8
38 1250 1609
II II II
12 12 12
CA
33.617
-114.717
-8
119
II
12
CA
34.200
-118.350
-8
226
II
12
CA CA CA CA CA
34.217 33.300 33.133 35.683 33.967
-119.083 -117.350 -117.283 -117.683 -117.633
-8 -8 -8 -8 -8
23 23 100 677 198
III II II II III
12 12 12 12 11
CA
32.583
-116.983
-8
159
II
12
CA
38.000
-122.050
-8
7
II
12
CA
41.783
-124.233
-8
17
II
12
USAF
Station Name
State
723449 723443 723434 723416 723418 723406 722748 722745 722784
ROGERS (AWOS) SILOAM SPRING(AWOS) SPRINGDALE MUNI STUTTGART (AWOS) TEXARKANA WEBB FIELD WALNUT RIDGE (AWOS) CASA GRANDA (AWOS) DAVIS MONTHAN AFB DEER VALLEY/PHOENIX DOUGLAS BISBEEDOUGLAS INTL A FLAGSTAFF PULLIAM ARPT GRAND CANYON NATL P KINGMAN (AMOS) LUKE AFB PAGE MUNI (AMOS) PHOENIX SKY HARBOR INTL AP PRESCOTT LOVE FIELD SAFFORD (AMOS) SCOTTSDALE MUNI SHOW LOW MUNICIPAL TUCSON INTERNATIONAL AP WINSLOW MUNICIPAL AP YUMA INTL ARPT YUMA MCAS ALTURAS ARCATA AIRPORT BAKERSFIELD MEADOWS FIELD BEALE AFB BISHOP AIRPORT BLUE CANYON AP BLYTHE RIVERSIDE CO ARPT BURBANK-GLENDALEPASSADENA AP CAMARILLO (AWOS) CAMP PENDLETON MCAS CARLSBAD/PALOMAR CHINA LAKE NAF CHINO AIRPORT CHULA VISTA BROWN FIELD NAAS CONCORD CONCORDBUCHANAN FIEL CRESCENT CITY FAA AI
722735 723755 723783 723700 722785 723710 722780 723723 722747 722789 723747 722740 723740 722800 699604 725958 725945 723840 724837 724800 725845 747188 722880 723926 722926 722927 746120 722899 722904 724936 725946
26
USAF 723815 723810 723890 722976 724935 747185 722956 723816 747020 724927 722895 722970 722950 722860 724815 724926 725955 724915 745090 724955 723805 724930 723927 722868 747187 723820 723965 723910 723895 725910 725920 722869 724830 724839 724917 722900 722930
Station Name DAGGETT BARSTOWDAGGETT AP EDWARDS AFB FRESNO YOSEMITE INTL AP FULLERTON MUNICIPAL HAYWARD AIR TERM IMPERIAL JACK NORTHROP FLD H LANCASTER GEN WM FOX FIELD LEMOORE REEVES NAS LIVERMORE MUNICIPAL LOMPOC (AWOS) LONG BEACH DAUGHERTY FLD LOS ANGELES INTL ARPT MARCH AFB MERCED/MACREADY FLD MODESTO CITY-COUNTY AP MONTAGUE SISKIYOU COUNTY AP MONTEREY NAF MOUNTAIN VIEW MOFFETT FLD NAS NAPA CO. AIRPORT NEEDLES AIRPORT OAKLAND METROPOLITAN ARPT OXNARD AIRPORT PALM SPRINGS INTL PALM SPRINGS THERMAL AP PALMDALE AIRPORT PASO ROBLES MUNICIPAL ARPT POINT MUGU NF PORTERVILLE (AWOS) RED BLUFF MUNICIPAL ARPT REDDING MUNICIPAL ARPT RIVERSIDE MUNI SACRAMENTO EXECUTIVE ARPT SACRAMENTO METROPOLITAN AP SALINAS MUNICIPAL AP SAN DIEGO LINDBERGH FIELD SAN DIEGO MIRAMAR NAS
State
Latitude
Longitude
Time Zone
Elevation
NSRDB Class
Pool Years
CA
34.850
-116.800
-8
586
I
24
CA CA CA CA CA CA
34.900 36.783 33.867 37.667 32.833 33.917
-117.867 -119.717 -117.983 -122.117 -115.583 -118.333
-8 -8 -8 -8 -8 -8
706 102 29 14 -17 21
II I II II II II
12 24 12 12 12 12
CA
34.733
-118.217
-8
713
II
12
CA CA CA
36.333 37.700 34.667
-119.950 -121.817 -120.467
-8 -8 -8
73 121 27
II II III
12 12 12
CA
33.833
-118.167
-8
8
I
24
CA CA CA
33.933 33.900 37.283
-118.400 -117.250 -120.517
-8 -8 -8
30 462 47
I II II
24 12 12
CA
37.633
-120.950
-8
30
II
12
CA
41.783
-122.467
-8
803
II
12
CA
36.600
-121.867
-8
50
II
12
CA
37.400
-122.050
-8
12
III
10
CA CA
38.217 34.767
-122.283 -114.617
-8 -8
10 279
II II
12 12
CA
37.717
-122.217
-8
2
II
12
CA CA
34.200 33.833
-119.200 -116.500
-8 -8
11 145
II II
12 12
CA
33.633
-116.167
-8
-34
II
12
CA
34.633
-118.083
-8
769
II
12
CA
35.667
-120.633
-8
244
II
12
CA CA
34.117 36.033
-119.117 -119.067
-8 -8
3 135
II III
12 12
CA
40.150
-122.250
-8
106
II
12
CA CA
40.517 33.950
-122.317 -117.450
-8 -8
153 256
I II
12 12
CA
38.500
-121.500
-8
5
I
24
CA
38.700
-121.583
-8
7
II
12
CA
36.667
-121.600
-8
21
II
12
CA
32.733
-117.167
-8
4
I
24
CA
32.867
-117.133
-8
140
II
12
27
USAF 722906 722903 724940 724945 722897 723830 722977 723925 723940 722885 724957 725847 724920 745160 725846 690150 725905 722886 723896 724838 724698 724620 724676 724695 724699 724660 724767 725700 725650 724666 724625 724675 724769 724760 724768 724677 725715 724635
Station Name SAN DIEGO NORTH ISLAND NAS SAN DIEGO/MONTGOMER SAN FRANCISCO INTL AP SAN JOSE INTL AP SAN LUIS CO RGNL SANDBERG SANTA ANA JOHN WAYNE AP SANTA BARBARA MUNICIPAL AP SANTA MARIA PUBLIC ARPT SANTA MONICA MUNI SANTA ROSA (AWOS) SOUTH LAKE TAHOE STOCKTON METROPOLITAN ARPT TRAVIS FIELD AFB TRUCKEE-TAHOE TWENTYNINE PALMS UKIAH MUNICIPAL AP VAN NUYS AIRPORT VISALIA MUNI (AWOS) YUBA CO AKRON WASHINGTON CO AP ALAMOSA SAN LUIS VALLEY RGNL ASPEN PITKIN CO SAR AURORA BUCKLEY FIELD ANGB BROOMFIELD/JEFFCO [BOULDER - SURFRAD] COLORADO SPRINGS MUNI AP CORTEZ/MONTEZUMA CO CRAIG-MOFFAT DENVER INTL AP DENVER/CENTENNIAL [GOLDEN - NREL] DURANGO/LA PLATA CO EAGLE COUNTY AP FORT COLLINS (AWOS) GRAND JUNCTION WALKER FIELD GREELEY/WELD (AWOS) GUNNISON CO. (AWOS) HAYDEN/YAMPA (AWOS) LA JUNTA MUNICIPAL AP
State
Latitude
Longitude
Time Zone
Elevation
NSRDB Class
Pool Years
CA
32.700
-117.200
-8
15
II
12
CA CA CA CA CA
32.817 37.617 37.367 35.233 34.750
-117.133 -122.400 -121.933 -120.633 -118.717
-8 -8 -8 -8 -8
129 2 16 66 1377
II I II II III
12 24 12 12 10
CA
33.683
-117.867
-8
16
II
12
CA
34.433
-119.850
-8
3
I
12
CA CA CA CA
34.917 34.017 38.517 38.900
-120.467 -118.450 -122.817 -120.000
-8 -8 -8 -8
77 53 38 1909
I II II II
24 12 12 12
CA
37.900
-121.233
-8
7
II
12
CA CA CA CA CA CA CA
38.267 39.317 34.300 39.133 34.217 36.317 39.100
-121.933 -120.133 -116.167 -123.200 -118.483 -119.400 -121.567
-8 -8 -8 -8 -8 -8 -8
18 1798 626 189 235 89 19
II II II II II II II
12 12 12 12 12 12 12
CO
40.167
-103.233
-7
1421
II
12
CO
37.433
-105.867
-7
2296
II
24
CO
39.217
-106.867
-7
2444
II
12
CO
39.717
-104.750
-7
1726
II
12
CO
40.130
-105.240
-7
1689
III
12
CO
38.817
-104.717
-7
1872
II
24
CO CO CO
37.300 40.500 39.833
-108.633 -107.533 -104.650
-7 -7 -7
1803 1915 1650
II II I
12 12 12
CO
39.742
-105.179
-7
1829
II
12
CO CO CO
37.150 39.650 40.450
-107.750 -106.917 -105.017
-7 -7 -7
2038 1980 1529
II II II
12 21 12
CO
39.133
-108.533
-7
1475
I
24
CO CO CO CO
40.433 38.533 40.483 38.050
-104.633 -106.933 -107.217 -103.533
-7 -7 -7 -7
1420 2339 2012 1281
II II II II
12 12 12 12
28
CO CO CO CO CO CO
Latitude 38.067 39.217 39.183 38.500 38.283 39.533
Longitude -102.683 -106.317 -103.717 -107.900 -104.500 -107.717
Time Zone -7 -7 -7 -7 -7 -7
Elevation 1129 3026 1695 1755 1428 1691
NSRDB Class III II I II II III
Pool Years 10 12 12 12 24 12
CO
37.267
-104.333
-7
1751
II
12
CT
41.183
-73.150
-5
3
I
24
CT CT
41.367 41.333
-73.483 -72.050
-5 -5
139 3
II II
12 12
CT
41.933
-72.683
-5
49
I
24
CT
41.733
-72.650
-5
6
II
12
CT
41.267
-72.883
-5
2
II
12
CT DE
41.483 39.133
-73.133 -75.467
-5 -5
222 7
III II
12 12
DE
39.667
-75.600
-5
23
I
24
FL FL FL
30.783 29.183 26.200
-86.517 -81.067 -80.167
-6 -5 -5
58 9 4
II I II
12 24 12
FL
26.067
-80.150
-5
3
II
12
FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL
26.583 29.700 25.483 30.500 30.233 30.333 24.550 24.583 27.983 27.850 24.733 30.400 28.117 25.817 25.650 25.900 26.150 28.617 29.167 28.550 28.433
-81.867 -82.283 -80.383 -81.700 -81.667 -81.517 -81.750 -81.683 -82.017 -82.517 -81.050 -81.417 -80.650 -80.300 -80.433 -80.283 -81.767 -80.717 -82.217 -81.333 -81.333
-5 -5 -5 -5 -5 -5 -5 -5 -5 -5 -5 -5 -5 -5 -5 -5 -5 -5 -5 -5 -5
5 41 5 8 9 12 1 7 43 8 2 5 11 11 3 3 3 3 27 33 29
I I II I II II I II II II II II II I II II III III II II I
12 12 12 24 12 12 24 12 12 12 12 12 12 24 12 12 10 12 12 12 12
USAF
Station Name
State
724636 724673 724665 724765 724640 725717
LAMAR MUNICIPAL LEADVILLE/LAKE CO. LIMON MONTROSE CO. ARPT PUEBLO MEMORIAL AP RIFLE/GARFIELD RGNL TRINIDAD LAS ANIMAS COUNTY AP BRIDGEPORT SIKORSKY MEMORIAL DANBURY MUNICIPAL GROTON NEW LONDON AP HARTFORD BRADLEY INTL AP HARTFORD BRAINARD FD NEW HAVEN TWEED AIRPORT OXFORD (AWOS) DOVER AFB WILMINGTON NEW CASTLE CNTY AP CRESTVIEW BOB SIKES AP DAYTONA BEACH INTL AP FORT LAUDERDALE FORT LAUDERDALE HOLLYWOOD INT FORT MYERS PAGE FIELD GAINESVILLE REGIONAL AP HOMESTEAD AFB JACKSONVILLE INTL ARPT JACKSONVILLE NAS JACKSONVILLE/CRAIG KEY WEST INTL ARPT KEY WEST NAS LAKELAND LINDER RGN MACDILL AFB MARATHON AIRPORT MAYPORT NS MELBOURNE REGIONAL AP MIAMI INTL AP MIAMI/KENDALL-TAMIA MIAMI/OPA LOCKA NAPLES MUNICIPAL NASA SHUTTLE FCLTY OCALA MUNI (AWOS) ORLANDO EXECUTIVE AP ORLANDO INTL ARPT
724645 725040 725086 725046 725080 725087 725045 725029 724088 724089 722215 722056 722039 722025 722106 722146 722026 722060 722065 722068 722010 722015 722119 747880 722016 722066 722040 722020 722029 722024 722038 747946 722055 722053 722050
29
USAF 722057 722245 722225 722223 722115 722108 722103 722104 722116 722140 722110 747750 722210 747770 722045 722030 722226 722160 722135 723110 722190 722180 722136 722137 722255 722196 722250 722195 747804 722170 722270 747810 723200 722070 722166 722175 912180 912120
Station Name ORLANDO SANFORD AIRPORT PANAMA CITY BAY CO PENSACOLA FOREST SHERMAN NAS PENSACOLA REGIONAL AP SARASOTA BRADENTON SOUTHWEST FLORIDA I ST LUCIE CO INTL ST PETERSBURG ALBERT WHITTED ST PETERSBURG CLEAR TALLAHASSEE REGIONAL AP [ISIS] TAMPA INTERNATIONAL AP TYNDALL AFB VALPARAISO ELGIN AFB VALPARAISO HURLBURT VERO BEACH MUNICIPAL ARPT WEST PALM BEACH INTL ARPT WHITING FIELD NAAS ALBANY DOUGHERTY COUNTY AP ALMA BACON COUNTY AP ATHENS BEN EPPS AP ATLANTA HARTSFIELD INTL AP AUGUSTA BUSH FIELD BRUNSWICK GOLDEN IS BRUNSWICK MALCOLM MCKINNON AP COLUMBUS METROPOLITAN ARPT DEKALB PEACHTREE FORT BENNING LAWSON FULTON CO ARPT BROW HUNTER AAF MACON MIDDLE GA REGIONAL AP MARIETTA DOBBINS AFB MOODY AFB/VALDOSTA ROME R B RUSSELL AP SAVANNAH INTL AP VALDOSTA WB AIRPORT WARNER ROBINS AFB ANDERSEN AFB GUAM WFO
State
Latitude
Longitude
Time Zone
Elevation
NSRDB Class
Pool Years
FL
28.783
-81.250
-5
17
II
12
FL
30.200
-85.683
-6
6
II
12
FL
30.350
-87.317
-6
10
II
12
FL FL FL FL
30.483 27.383 26.533 27.483
-87.183 -82.550 -81.750 -80.367
-6 -5 -5 -5
34 10 9 7
I II II II
12 12 12 12
FL
27.767
-82.633
-5
2
II
12
FL
27.900
-82.683
-5
3
II
12
FL
30.380
-84.370
-5
21
I
24
FL FL FL FL
27.967 30.067 30.483 30.417
-82.533 -85.583 -86.517 -86.683
-5 -6 -6 -6
6 7 20 12
I II II II
24 12 12 12
FL
27.650
-80.417
-5
7
I
12
FL
26.683
-80.100
-5
6
II
24
FL
30.717
-87.017
-6
54
II
12
GA
31.533
-84.183
-5
58
II
12
GA GA
31.533 33.950
-82.500 -83.333
-5 -5
63 244
II I
12 24
GA
33.633
-84.433
-5
308
I
24
GA GA
33.367 31.250
-81.967 -81.467
-5 -5
40 8
I II
24 12
GA
31.150
-81.383
-5
4
II
12
GA
32.517
-84.950
-6
120
I
24
GA GA GA GA
33.867 32.350 33.767 32.000
-84.300 -85.000 -84.517 -81.150
-5 -6 -5 -5
313 88 263 13
II II II II
12 12 12 12
GA
32.683
-83.650
-5
108
I
24
GA GA GA GA GA GA GU GU
33.917 30.967 34.350 32.117 30.783 32.633 13.567 13.483
-84.517 -83.200 -85.167 -81.200 -83.283 -83.600 144.917 144.800
-5 -5 -5 -5 -5 -5 10 10
330 71 195 14 61 92 162 77
II II III I II II II II
12 12 12 24 12 12 12 24
30
HI HI HI HI HI HI HI HI HI HI IA IA IA
Latitude 21.317 19.717 21.317 20.900 21.450 20.950 19.733 20.783 21.983 21.150 43.083 41.400 42.050
Longitude -158.067 -155.050 -157.933 -156.433 -157.783 -156.633 -156.050 -156.950 -159.333 -157.100 -94.267 -95.050 -93.850
Time Zone -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -6 -6 -6
Elevation 15 9 2 16 3 80 15 409 31 137 372 360 354
NSRDB Class II I I I II II III II I II III III III
Pool Years 12 24 24 24 12 12 10 12 24 12 10 10 10
IA
40.783
-91.117
-6
211
II
12
IA
42.050
-94.783
-6
375
III
10
IA
41.883
-91.717
-6
256
II
12
IA IA IA IA IA IA IA IA IA IA IA IA IA IA IA IA IA
41.033 43.067 40.717 41.833 41.267 41.017 43.283 41.983 41.533 42.400 43.400 41.050 42.550 40.667 40.467 41.300 42.783
-93.367 -92.617 -95.033 -90.333 -95.767 -94.367 -91.733 -95.383 -93.667 -90.700 -94.750 -91.983 -94.183 -91.333 -91.433 -93.117 -96.200
-6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6
320 343 303 216 382 394 353 388 292 322 401 244 355 221 205 283 365
III III III II III III III III I I II III II III III III III
10 10 10 12 10 10 10 10 24 12 12 10 12 10 10 10 10
IA
43.150
-93.333
-6
364
I
24
IA IA IA IA IA IA IA IA IA
42.233 41.367 41.683 42.683 42.983 41.100 41.017 43.217 40.750
-91.167 -91.150 -93.017 -91.967 -96.067 -92.450 -95.267 -95.833 -95.417
-6 -6 -6 -6 -6 -6 -6 -6 -6
259 167 290 328 431 257 318 432 296
III III III III III II III III III
10 10 10 10 10 12 10 10 10
IA
42.383
-96.383
-6
333
I
24
USAF
Station Name
State
911780 912850 911820 911900 911760 911904 911975 911905 911650 911860 725457 725453 725486
BARBERS POINT NAS HILO INTERNATIONAL AP HONOLULU INTL ARPT KAHULUI AIRPORT KANEOHE BAY MCAS KAPALUA KONA INTL AT KEAHOL LANAI LIHUE AIRPORT MOLOKAI (AMOS) ALGONA ATLANTIC BOONE MUNI BURLINGTON MUNICIPAL AP CARROLL CEDAR RAPIDS MUNICIPAL AP CHARITON CHARLES CITY CLARINDA CLINTON MUNI (AWOS) COUNCIL BLUFFS CRESTON DECORAH DENISON DES MOINES INTL AP DUBUQUE REGIONAL AP ESTHERVILLE MUNI FAIR FIELD FORT DODGE (AWOS) FORT MADISON KEOKUK MUNI KNOXVILLE LE MARS MASON CITY MUNICIPAL ARPT MONTICELLO MUNI MUSCATINE NEWTON MUNI OELWEN ORANGE CITY OTTUMWA INDUSTRIAL AP RED OAK SHELDON SHENANDOAH MUNI SIOUX CITY SIOUX GATEWAY AP
725455 725468 725450 725469 725463 725479 725473 725497 725474 725476 725477 725460 725470 726499 726498 725490 725483 725456 725493 725484 725485 725475 725487 725464 725488 725489 725465 725494 725495 725467 725570
31
IA IA IA IA IA ID ID ID ID ID
Latitude 43.167 42.600 41.283 42.550 42.433 43.620 42.533 43.633 47.767 43.500
Longitude -95.150 -95.233 -91.667 -92.400 -93.867 -116.210 -113.767 -116.633 -116.817 -114.300
Time Zone -6 -6 -6 -6 -6 -7 -7 -7 -8 -7
Elevation 408 454 230 264 342 701 1267 740 707 1620
NSRDB Class II III III I III I II III II II
Pool Years 12 10 10 24 10 24 12 12 12 12
ID
43.517
-112.067
-7
1441
II
12
ID
42.550
-114.350
-7
1200
II
12
ID
46.367
-117.017
-8
438
I
12
ID ID ID ID ID IL IL IL IL IL IL IL IL IL IL IL
42.150 43.050 42.917 45.117 42.650 41.767 38.550 38.567 40.467 41.783 41.983 42.417 39.833 37.750 41.467 38.317
-112.283 -115.867 -112.567 -113.883 -111.583 -88.467 -89.850 -90.150 -88.917 -87.750 -87.917 -87.867 -88.867 -89.017 -90.517 -88.867
-7 -7 -7 -7 -7 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6
1362 912 1353 1233 1780 215 135 126 272 186 201 222 213 144 180 146
II II I III II II II II II II I II II II I II
12 12 24 12 12 12 12 12 12 12 24 12 12 12 24 12
IL
40.667
-89.683
-6
199
I
24
IL
39.933
-91.200
-6
233
II
12
IL
42.200
-89.100
-6
223
I
24
IL IL IL
37.767 39.850 41.750
-89.250 -89.683 -89.667
-6 -6 -6
128 179 197
II I II
12 24 12
IL
40.060
-88.370
-6
213
II
12
IL IN IN IN IN IN
41.917 40.233 38.050 41.000 40.650 38.250
-88.250 -85.400 -87.533 -85.200 -86.150 -86.950
-6 -5 -6 -5 -5 -5
231 293 116 241 253 161
II II I I II III
12 12 24 24 12 11
USAF
Station Name
State
726500 725496 725454 725480 725478 726810 725867 726813 727834 725865
SPENCER STORM LAKE WASHINGTON WATERLOO MUNICIPAL AP WEBSTER CITY BOISE AIR TERMINAL [UO] BURLEY MUNICIPAL ARPT CALDWELL (AWOS) COEUR D`ALENE(AWOS) HAILEY/FRIEDMAN MEM IDAHO FALLS FANNING FIELD JOSLIN FLD MAGIC VA [TWIN FALLS - UO] LEWISTON NEZ PERCE CNTY AP MALAD CITY MOUNTAIN HOME AFB POCATELLO REGIONAL AP SALMON/LEMHI (AWOS) SODA SPRINGS/TIGERT AURORA MUNICIPAL BELLEVILLE SCOTT AFB CAHOKIA/ST. LOUIS CENTRAL ILLINOIS RG CHICAGO MIDWAY AP CHICAGO OHARE INTL AP CHICAGO/WAUKEGAN DECATUR MARION REGIONAL MOLINE QUAD CITY INTL AP MOUNT VERNON (AWOS) PEORIA GREATER PEORIA AP QUINCY MUNI BALDWIN FLD ROCKFORD GREATER ROCKFORD AP SOUTHERN ILLINOIS SPRINGFIELD CAPITAL AP STERLING ROCKFALLS UNIV OF ILLINOIS WI [BONDVILLE - SURFRAD] W. CHICAGO/DU PAGE DELAWARE CO JOHNSON EVANSVILLE REGIONAL AP FORT WAYNE INTL AP GRISSOM ARB HUNTINGBURG
725785 725866 727830 725786 726815 725780 726865 725868 744655 724338 725314 724397 725340 725300 725347 725316 724339 725440 724335 725320 724396 725430 724336 724390 725326 725315 725305 725336 724320 725330 725335 724365
32
IN
Latitude 39.717
Longitude -86.267
Time Zone -5
Elevation 241
NSRDB Class I
Pool Years 24
IN
40.417
-86.933
-5
183
II
12
IN
39.133
-86.617
-5
264
II
12
IN
41.700
-86.333
-5
236
I
24
IN
39.450
-87.300
-5
175
II
12
KS
37.667
-95.483
-6
298
II
12
KS
39.550
-97.650
-6
448
II
12
KS KS
37.767 38.333
-99.967 -96.183
-6 -6
785 368
II II
24 12
KS
39.050
-96.767
-6
324
III
10
KS
37.933
-100.717
-6
878
II
12
KS KS KS KS
39.367 38.350 38.850 39.383
-101.700 -98.867 -99.267 -99.833
-7 -6 -6 -6
1111 575 609 667
II II II II
24 12 12 12
KS
38.067
-97.867
-6
463
II
12
KS KS KS KS
37.033 39.133 37.617 38.050
-100.967 -96.667 -97.267 -97.283
-6 -6 -6 -6
901 330 414 467
II II II III
12 12 12 12
KS
38.833
-94.883
-6
331
II
12
KS KS KS KS KS
38.850 38.883 38.817 38.950 39.067
-94.733 -98.817 -97.667 -95.667 -95.633
-6 -6 -6 -6 -6
334 566 385 325 269
II I II II II
12 12 12 12 24
KS
37.650
-97.433
-6
402
II
24
KS
37.750
-97.217
-6
433
III
10
KY
36.983
-86.433
-6
161
II
12
KY
39.050
-84.667
-5
265
I
24
KY KY KY
36.667 37.900 37.817
-87.483 -85.967 -87.683
-6 -5 -6
173 239 117
II II III
12 12 12
KY
37.583
-83.317
-5
416
I
12
KY
38.033
-84.600
-5
294
I
24
KY
37.083
-84.083
-5
362
II
12
USAF
Station Name
State
724380
INDIANAPOLIS INTL AP LAFAYETTE PURDUE UNIV AP MONROE CO SOUTH BEND MICHIANA RGNL AP TERRE HAUTE HULMAN REGIONAL A CHANUTE MARTIN JOHNSON AP CONCORDIA BLOSSER MUNI AP DODGE CITY REGIONAL AP EMPORIA MUNICIPAL AP FORT RILEY MARSHALL AAF GARDEN CITY MUNICIPAL AP GOODLAND RENNER FIELD GREAT BEND (AWOS) HAYS MUNI (AWOS) HILL CITY MUNICIPAL AP HUTCHINSON MUNICIPAL AP LIBERAL MUNI MANHATTAN RGNL MCCONNELL AFB NEWTON (AWOS) OLATHE JOHNSON CO INDUSTRIAL OLATHE/JOHNSON CO. RUSSELL MUNICIPAL AP SALINA MUNICIPAL AP TOPEKA FORBES FIELD TOPEKA MUNICIPAL AP WICHITA MID-CONTINENT AP WICHITA/COL. JABARA BOWLING GREEN WARREN CO AP CINCINNATI NORTHERN KY AP FORT CAMPBELL AAF FORT KNOX GODMAN AAF HENDERSON CITY JACKSON JULIAN CARROLL AP LEXINGTON BLUEGRASS AP LONDON-CORBIN AP
724386 724375 725350 724373 724507 724580 724510 724556 724550 724515 724650 724517 724518 724655 724506 724516 724555 724505 724509 724475 724468 724585 724586 724565 724560 724500 724504 746716 724210 746710 724240 724238 724236 724220 724243
33
KY
Latitude 38.233
Longitude -85.667
Time Zone -5
Elevation 165
NSRDB Class II
Pool Years 12
KY
38.183
-85.733
-5
147
I
24
KY
37.050
-88.767
-6
124
I
12
KY
38.000
-84.600
-5
283
III
12
LA
31.400
-92.300
-6
34
II
12
LA LA LA LA LA LA
32.500 30.533 31.317 31.050 29.567 30.200
-93.667 -91.150 -92.550 -93.183 -90.667 -91.983
-6 -6 -6 -6 -6 -6
54 20 27 102 3 12
II II III II II II
12 24 11 12 12 12
LA
30.117
-93.233
-6
5
I
24
LA LA LA
30.217 32.517 30.033
-93.167 -92.033 -91.883
-6 -6 -6
5 40 8
III II II
10 12 12
LA
29.817
-90.017
-6
2
II
12
LA
30.000
-90.250
-6
1
I
24
LA
30.050
-90.033
-6
3
II
12
LA LA
29.717 32.533
-91.333 -93.750
-6 -6
3 55
II III
12 10
LA
32.450
-93.817
-6
77
I
24
MA MA MA MA MA MA MA MA MA MA MA MA MA
41.667 42.583 42.367 42.200 42.717 41.400 41.250 41.667 42.700 42.183 41.650 41.917 42.067
-70.283 -70.917 -71.017 -72.533 -71.117 -70.617 -70.067 -70.950 -73.167 -71.183 -70.517 -70.733 -70.217
-5 -5 -5 -5 -5 -5 -5 -5 -5 -5 -5 -5 -5
17 34 6 75 46 21 14 25 201 15 40 45 2
II II I II II II II II III II II III II
12 12 24 12 12 12 12 12 10 12 12 11 12
MA
42.150
-72.717
-5
83
II
12
MA
42.267
-71.883
-5
300
I
24
MD
38.817
-76.867
-5
86
II
12
MD
39.167
-76.683
-5
45
I
24
MD
39.700
-77.733
-5
220
II
12
USAF
Station Name
State
724235
LOUISVILLE BOWMAN FIELD LOUISVILLE STANDIFORD FIELD PADUCAH BARKLEY REGIONAL AP SOMERSET(AWOS) ALEXANDRIA ESLER REGIONAL AP BARKSDALE AFB BATON ROUGE RYAN ARPT ENGLAND AFB FORT POLK AAF HOUMA-TERREBONNE LAFAYETTE REGIONAL AP LAKE CHARLES REGIONAL ARPT LAKE CHARLES WB AIRP MONROE REGIONAL AP NEW IBERIA NAAS NEW ORLEANS ALVIN CALLENDER F NEW ORLEANS INTL ARPT NEW ORLEANS LAKEFRONT AP PATTERSON MEMORIAL SHREVEPORT DOWNTOWN SHREVEPORT REGIONAL ARPT BARNSTABLE MUNI BOA BEVERLY MUNI BOSTON LOGAN INT'L ARPT CHICOPEE FALLS WESTO LAWRENCE MUNI MARTHAS VINEYARD NANTUCKET MEMORIAL AP NEW BEDFORD RGNL NORTH ADAMS NORWOOD MEMORIAL OTIS ANGB PLYMOUTH MUNICIPAL PROVINCETOWN (AWOS) WESTFIELD BARNES MUNI AP WORCHESTER REGIONAL ARPT ANDREWS AFB BALTIMORE BLTWASHNGTN INT'L HAGERSTOWN RGNL RIC
724230 724350 724354 722487 722485 722317 747540 722390 722406 722405 722400 722404 722486 722314 722316 722310 722315 722329 722484 722480 725067 725088 725090 744910 744904 725066 725063 725065 725075 725098 725060 725064 725073 744915 725095 745940 724060 724066
34
MD
Latitude 38.300
Longitude -76.417
Time Zone -5
Elevation 14
NSRDB Class II
Pool Years 12
MD
38.333
-75.517
-5
15
II
12
ME ME
44.050 44.317
-70.283 -69.800
-5 -5
88 107
II II
12 12
ME
44.800
-68.817
-5
56
I
12
ME ME ME
44.450 46.867 46.117
-68.367 -68.033 -67.800
-5 -5 -5
26 190 150
II I II
12 24 12
ME
45.650
-68.683
-5
124
III
12
ME ME ME ME ME ME ME ME
43.900 47.283 43.650 46.683 44.067 43.400 44.533 43.967
-69.933 -68.317 -70.300 -68.050 -69.100 -70.717 -69.683 -69.717
-5 -5 -5 -5 -5 -5 -5 -5
21 309 14 163 17 74 101 21
II III I II II II II III
12 10 24 12 12 12 12 10
MI
45.067
-83.583
-5
210
I
24
MI
42.217
-83.750
-5
256
II
12
MI
42.300
-85.250
-5
283
II
12
MI MI MI MI
42.133 44.283 46.250 42.400
-86.433 -85.417 -84.467 -83.000
-5 -5 -5 -5
196 396 250 190
II III II I
12 12 12 12
MI
42.217
-83.350
-5
194
I
24
MI MI MI
42.233 45.750 42.967
-83.533 -87.033 -83.750
-5 -5 -5
218 187 234
II II I
12 12 24
MI
42.883
-85.517
-5
242
I
24
MI
47.167
-88.500
-5
327
II
12
MI
44.367
-84.683
-5
351
I
24
MI MI MI MI MI
42.633 45.817 46.533 42.267 42.233
-83.983 -88.117 -90.133 -84.467 -85.550
-5 -6 -6 -5 -5
293 360 375 304 273
III II II II II
11 12 12 12 12
MI
42.783
-84.583
-5
256
I
24
MI MI
44.267 45.133
-86.250 -87.633
-5 -6
189 191
II II
12 12
USAF
Station Name
State
724040
PATUXENT RIVER NAS SALISBURY WICOMICO CO AP AUBURN-LEWISTON AUGUSTA AIRPORT BANGOR INTERNATIONAL AP BAR HARBOR (AWOS) CARIBOU MUNICIPAL ARPT HOULTON INTL ARPT MILLINOCKET MUNICIPAL AP NAVAL AIR STATION NORTHERN AROOSTOOK PORTLAND INTL JETPORT PRESQUE ISLE MUNICIP ROCKLAND/KNOX(AWOS) SANFORD MUNI (AWOS) WATERVILLE (AWOS) WISCASSET ALPENA COUNTY REGIONAL AP ANN ARBOR MUNICIPAL BATTLE CREEK KELLOGG AP BENTON HARBOR/ROSS CADILLAC WEXFORD CO AP CHIPPEWA CO INTL DETROIT CITY AIRPORT DETROIT METROPOLITAN ARPT DETROIT WILLOW RUN AP ESCANABA (AWOS) FLINT BISHOP INTL ARPT GRAND RAPIDS KENT COUNTY INT' HANCOCK HOUGHTON CO AP HOUGHTON LAKE ROSCOMMON CO AR HOWELL IRON MOUNTAIN/FORD IRONWOOD (AWOS) JACKSON REYNOLDS FIELD KALAMAZOO BATTLE CR LANSING CAPITAL CITY ARPT MANISTEE (AWOS) MENOMINEE (AWOS)
724045 726184 726185 726088 726077 727120 727033 726196 743920 726083 726060 727130 726079 726064 726073 727135 726390 725374 725396 726355 726384 727344 725375 725370 725376 726480 726370 726350 727440 726380 725378 727437 727445 725395 726357 725390 726385 726487
35
USAF 725377 726360 726375 726395 727347 726379 727340 725384 726387 727504 726589 726557 727566 727476 727550 727507 726555 727503 726558 727473 727452 727457 727450 727459 727474 726586 726563 726560 726579 727505 726547 727458 727478 727455 726569 727470 726583 726578 726585 726559
Station Name MOUNT CLEMENS SELFRIDGE FLD MUSKEGON COUNTY ARPT OAKLAND CO INTL OSCODA WURTSMITH AFB PELLSTON EMMET COUNTY AP SAGINAW TRI CITY INTL AP SAULT STE MARIE SANDERSON FIE ST.CLAIR COUNTY INT TRAVERSE CITY CHERRY CAPITAL AITKIN NDB(AWOS) ALBERT LEA (AWOS) ALEXANDRIA MUNICIPAL AP AUSTIN MUNI BAUDETTE INTERNATIONAL AP BEMIDJI MUNICIPAL BENSON MUNI BRAINERD/WIELAND CAMBRIDGE MUNI CLOQUET (AWOS) CRANE LAKE (AWOS) CROOKSTON MUNI FLD DETROIT LAKES(AWOS) DULUTH INTERNATIONAL ARPT ELY MUNI EVELETH MUNI (AWOS) FAIRMONT MUNI(AWOS) FARIBAULT MUNI AWOS FERGUS FALLS(AWOS) FLYING CLOUD FOSSTON(AWOS) GLENWOOD (ASOS) GRAND RAPIDS(AWOS) HALLOCK HIBBING CHISHOLMHIBBING AP HUTCHINSON (AWOS) INTERNATIONAL FALLS INTL AP LITCHFIELD MUNI LITTLE FALLS (AWOS) MANKATO(AWOS) MARSHALL/RYAN(AWOS)
State
Latitude
Longitude
Time Zone
Elevation
NSRDB Class
Pool Years
MI
42.617
-82.833
-5
177
II
12
MI MI MI
43.167 42.667 44.450
-86.233 -83.417 -83.400
-5 -5 -5
190 306 188
I II III
24 12 10
MI
45.567
-84.783
-5
218
II
12
MI
43.533
-84.083
-5
201
II
12
MI
46.467
-84.350
-5
219
I
24
MI
42.917
-82.533
-5
198
III
11
MI
44.733
-85.583
-5
188
I
24
MN MN MN MN
46.550 43.683 45.883 43.667
-93.683 -93.367 -95.400 -92.933
-6 -6 -6 -6
367 383 433 375
III II II III
12 12 12 12
MN
48.717
-94.600
-6
330
III
10
MN MN MN MN MN MN MN MN
47.500 45.317 46.400 45.567 46.700 46.267 47.850 46.833
-94.933 -95.650 -94.133 -93.267 -92.500 -92.567 -96.617 -95.883
-6 -6 -6 -6 -6 -6 -6 -6
420 317 374 287 390 350 273 426
II III II III III II III II
12 11 12 12 12 12 12 12
MN
46.833
-92.217
-6
433
I
24
MN MN MN MN MN MN MN MN MN MN
47.817 47.400 43.650 44.333 46.283 44.817 47.583 45.650 47.217 48.783
-91.833 -92.500 -94.417 -93.317 -96.150 -93.450 -95.767 -95.317 -93.517 -96.950
-6 -6 -6 -6 -6 -6 -6 -6 -6 -6
455 421 354 322 361 283 388 425 413 250
II III II II II II III III II III
12 12 12 12 12 12 12 10 12 12
MN
47.383
-92.850
-6
411
II
12
MN
44.867
-94.383
-6
323
III
12
MN
48.567
-93.400
-6
359
I
24
MN MN MN MN
45.100 45.950 44.217 44.450
-94.500 -94.350 -93.917 -95.817
-6 -6 -6 -6
347 342 311 359
II III II II
12 12 12 12
36
MN
Latitude 45.067
Longitude -93.350
Time Zone -6
Elevation 265
NSRDB Class II
Pool Years 12
MN
44.883
-93.233
-6
254
I
24
MN MN MN MN MN
45.883 45.567 44.317 48.017 44.117
-93.267 -95.967 -94.500 -92.867 -93.250
-6 -6 -6 -6 -6
309 344 308 397 350
II II II III III
12 12 12 12 12
MN
46.900
-95.067
-6
437
II
12
MN MN MN
43.983 44.583 44.550
-96.317 -92.483 -95.083
-6 -6 -6
529 239 312
II II II
12 12 12
MN
43.900
-92.500
-6
398
I
24
MN MN MN MN MN MN MN MN MN MN MN
48.850 47.200 44.850 45.550 44.933 48.067 47.050 45.700 45.117 44.083 43.650
-95.700 -91.400 -93.150 -94.050 -93.050 -96.183 -91.750 -96.500 -95.083 -91.700 -95.583
-6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6
323 331 250 311 220 340 328 313 345 200 480
II III III I II II III III II II II
12 12 10 24 12 12 12 12 12 12 12
MO
37.233
-89.567
-6
103
II
12
MO
38.817
-92.217
-6
272
I
24
MO MO MO MO MO
37.767 37.750 38.583 37.150 38.100
-90.400 -92.150 -92.150 -94.500 -92.550
-6 -6 -6 -6 -6
274 351 167 297 265
III II II II II
10 12 12 12 12
MO
39.117
-94.600
-6
226
II
12
MO MO MO
39.300 40.100 36.767
-94.717 -92.550 -90.467
-6 -6 -6
298 294 146
I II III
24 12 10
MO
37.233
-93.383
-6
384
I
24
MO
39.767
-94.900
-6
247
II
12
MO
38.750
-90.367
-6
173
I
24
MO
38.650
-90.650
-6
141
I
12
MO
38.133
-91.767
-6
336
II
12
USAF
Station Name
State
726575
MINNEAPOLIS/CRYSTAL MINNEAPOLIS-ST PAUL INT'L ARP MORA MUNI (AWOS) MORRIS MUNI (AWOS) NEW ULM MUNI (AWOS) ORR OWATONNA (AWOS) PARK RAPIDS MUNICIPAL AP PIPESTONE (AWOS) RED WING REDWOOD FALLS MUNI ROCHESTER INTERNATIONAL ARPT ROSEAU MUNI (AWOS) SILVER BAY SOUTH ST PAUL MUNI ST CLOUD REGIONAL ARPT ST PAUL DOWNTOWN AP THIEF RIVER(AWOS) TWO HARBORS WHEATON NDB (AWOS) WILLMAR WINONA MUNI (AWOS) WORTHINGTON (AWOS) CAPE GIRARDEAU MUNICIPAL AP COLUMBIA REGIONAL AIRPORT FARMINGTON FT LNRD WD AAF JEFFERSON CITY MEM JOPLIN MUNICIPAL AP KAISER MEM (AWOS) KANSAS CITY DOWNTOWN AP KANSAS CITY INT'L ARPT KIRKSVILLE REGIONAL AP POPLAR BLUFF(AMOS) SPRINGFIELD REGIONAL ARPT ST JOSEPH ROSECRANS MEMORIAL ST LOUIS LAMBERT INT'L ARPT ST LOUIS SPIRIT OF ST LOUIS A VICHY ROLLA NATL ARPT
726580 727475 726565 726567 726544 726568 727453 726566 726564 726556 726440 727477 727556 726603 726550 726584 727555 727444 727533 726576 726588 726587 723489 724450 724454 724457 724458 723495 724459 724463 724460 724455 723300 724400 724490 724340 724345 724456
37
MO MS MS MS
Latitude 38.717 33.650 33.450 33.483
Longitude -93.550 -88.450 -88.583 -90.983
Time Zone -6 -6 -6 -6
Elevation 255 68 80 42
NSRDB Class II II II II
Pool Years 12 12 12 12
MS
33.500
-90.083
-6
47
II
12
MS MS
30.400 31.467
-89.067 -89.333
-6 -6
9 93
II II
12 12
MS
32.317
-90.083
-6
94
I
24
MS MS MS MS MS MS
30.417 31.233 32.333 32.550 31.617 34.267
-88.917 -90.467 -88.750 -88.567 -91.300 -88.767
-6 -6 -6 -6 -6 -6
8 126 90 83 83 110
II II I II II II
12 12 24 12 12 12
MT
45.800
-108.550
-7
1087
I
24
MT
45.800
-111.150
-7
1349
II
12
MT
45.950
-112.500
-7
1689
II
12
MT MT MT MT MT
48.600 48.217 47.133 47.467 48.550
-112.367 -106.617 -104.800 -111.383 -109.767
-7 -7 -7 -7 -7
1170 699 749 1117 788
II I II I II
21 24 12 24 12
MT
46.600
-111.967
-7
1167
I
24
MT
48.317
-114.250
-7
906
I
24
MT
47.050
-109.450
-7
1263
II
24
MT
45.700
-110.450
-7
1418
II
12
MT
46.433
-105.883
-7
801
II
22
MT
46.917
-114.100
-7
973
I
24
MT
47.700
-104.200
-7
605
II
12
MT
48.310
-105.100
-7
634
II
12
NC
35.433
-82.533
-5
652
I
24
NC
35.267
-75.550
-5
3
I
24
NC
35.217
-80.950
-5
222
I
24
NC NC
34.900 35.917
-76.883 -75.700
-5 -5
11 4
II II
12 12
NC
36.300
-76.250
-5
4
III
10
USAF
Station Name
State
724467 723306 723307 722356
WHITEMAN AFB COLUMBUS AFB GOLDEN TRI(AWOS) GREENVILLE MUNICIPAL GREENWOOD LEFLORE ARPT GULFPORT BILOXI INT HATTIESBURG LAUREL JACKSON INTERNATIONAL AP KEESLER AFB MCCOMB PIKE COUNTY AP MERIDIAN KEY FIELD MERIDIAN NAAS NATCHEZ/HARDY(AWOS) TUPELO C D LEMONS ARPT BILLINGS LOGAN INT'L ARPT BOZEMAN GALLATIN FIELD BUTTE BERT MOONEY ARPT CUT BANK MUNI AP GLASGOW INTL ARPT GLENDIVE(AWOS) GREAT FALLS INTL ARPT HAVRE CITY-COUNTY AP HELENA REGIONAL AIRPORT KALISPELL GLACIER PK INT'L AR LEWISTOWN MUNICIPAL ARPT LIVINGSTON MISSION FIELD MILES CITY MUNICIPAL ARPT MISSOULA INTERNATIONAL AP SIDNEY-RICHLAND WOLF POINT INTL [FORT PECK - SURFRAD] ASHEVILLE REGIONAL ARPT CAPE HATTERAS NWS BLDG CHARLOTTE DOUGLAS INTL ARPT CHERRY POINT MCAS DARE CO RGNL ELIZABETH CITY COAST GUARD AI [NREL]
722359 747685 722348 722350 747686 722358 722340 722345 722357 723320 726770 726797 726785 727796 727680 726676 727750 727770 727720 727790 726776 726798 742300 727730 727687 727686 723150 723040 723140 723090 723046 746943
38
USAF 723030 723035 746930 723066 723170 723145 723069 723067 723095 723096 723065 723060 723068 723143 723013 723193 727640 727573 727645 727530 727575 727576 727535 727675 727676 727670 725556 725635 725515 725540 725628 725555 725636 725565 725533 725564 725520
Station Name FAYETTEVILLE POPE AFB FAYETTEVILLE RGNL G FORT BRAGG SIMMONS AAF GOLDSBORO SEYMOUR JOHNSON AFB GREENSBORO PIEDMONT TRIAD INT HICKORY REGIONAL AP JACKSONVILLE (AWOS) KINSTON STALLINGS AFB NEW BERN CRAVEN CO REGL AP NEW RIVER MCAF PITT GREENVILLE ARP RALEIGH DURHAM INTERNATIONAL ROCKY MOUNT WILSON SOUTHERN PINES AWOS WILMINGTON INTERNATIONAL ARPT WINSTON-SALEM REYNOLDS AP BISMARCK MUNICIPAL ARPT [ISIS] DEVILS LAKE(AWOS) DICKINSON MUNICIPAL AP FARGO HECTOR INTERNATIONAL AP GRAND FORKS AF GRAND FORKS INTERNATIONAL AP JAMESTOWN MUNICIPAL ARPT MINOT AFB MINOT FAA AP WILLISTON SLOULIN INTL AP AINSWORTH MUNICIPAL ALLIANCE MUNICIPAL BEATRICE MUNICIPAL BELLEVUE OFFUTT AFB BREWSTER FIELD ARPT BROKEN BOW MUNI CHADRON MUNICIPAL AP COLUMBUS MUNI FALLS CITY/BRENNER FREMONT MUNI ARPT GRAND ISLAND CENTRAL NE REGIO
NC NC
Latitude 35.167 34.983
Longitude -79.017 -78.883
Time Zone -5 -5
Elevation 66 59
NSRDB Class II II
Pool Years 12 12
NC
35.133
-78.933
-5
93
II
12
NC
35.350
-77.967
-5
33
II
12
NC
36.100
-79.950
-5
273
I
24
NC NC NC
35.733 34.833 35.317
-81.383 -77.617 -77.633
-5 -5 -5
348 29 29
II II II
12 12 12
NC
35.067
-77.050
-5
5
II
12
NC NC
34.700 35.633
-77.383 -77.400
-5 -5
5 8
II III
12 11
NC
35.867
-78.783
-5
127
I
24
NC NC
35.850 35.233
-77.900 -79.400
-5 -5
50 141
II III
12 12
NC
34.267
-77.900
-5
9
I
24
NC
36.133
-80.217
-5
296
II
12
ND
46.770
-100.770
-7
502
I
24
ND ND
48.117 46.800
-98.917 -102.800
-6 -7
443 788
II II
12 12
ND
46.933
-96.817
-6
274
I
24
ND
47.967
-97.400
-6
276
II
12
ND
47.950
-97.183
-6
256
II
12
ND
46.917
-98.683
-6
455
II
12
ND ND
48.417 48.267
-101.350 -101.283
-6 -6
497 523
II I
12 21
ND
48.200
-103.650
-6
580
I
12
NE NE NE NE NE NE NE NE NE NE
42.583 42.050 40.300 41.117 40.450 41.433 42.833 41.450 40.083 41.450
-100.000 -102.800 -96.750 -95.917 -99.333 -99.650 -103.083 -97.333 -95.600 -96.517
-6 -7 -6 -6 -6 -6 -7 -6 -6 -6
789 1198 403 319 704 776 1011 451 300 379
II II III II III II II II II III
12 12 11 12 10 12 12 12 12 10
NE
40.967
-98.317
-6
561
II
24
State
39
USAF 725525 725626 725526 725510 725625 725560 725620 725566 725500 725530 725524 725660 725610 725527 725670 726160 726050 726165 726155 726116 743945 726130 726055 724070 724084 724094 745966 724096 724075 725020 725025 724095 723650 722687 723600 722686 722689 722725 723658
Station Name HASTINGS MUNICIPAL IMPERIAL FAA AP KEARNEY MUNI (AWOS) LINCOLN MUNICIPAL ARPT MCCOOK MUNICIPAL NORFOLK KARL STEFAN MEM ARPT NORTH PLATTE REGIONAL AP O`NEILL/BAKER FIELD OMAHA EPPLEY AIRFIELD OMAHA WSFO ORD/SHARP FIELD SCOTTSBLUFF W B HEILIG FIELD SIDNEY MUNICIPAL AP TEKAMAH (ASOS) VALENTINE MILLER FIELD BERLIN MUNICIPAL CONCORD MUNICIPAL ARPT DILLANT HOPKINS LACONIA MUNI (AWOS) LEBANON MUNICIPAL MANCHESTER AIRPORT MOUNT WASHINGTON PEASE INTL TRADEPOR ATLANTIC CITY INTL AP BELMAR ASC CALDWELL/ESSEX CO. CAPE MAY CO MCGUIRE AFB MILLVILLE MUNICIPAL AP NEWARK INTERNATIONAL ARPT TETERBORO AIRPORT TRENTON MERCER COUNTY AP ALBUQUERQUE INTL ARPT [ISIS] CARLSBAD CAVERN CITY AIR TERM CLAYTON MUNICIPAL AIRPARK CLOVIS CANNON AFB CLOVIS MUNI (AWOS) DEMING MUNI FARMINGTON FOUR CORNERS REGL
NE NE NE NE NE
Latitude 40.600 40.517 40.733 40.833 40.200
Longitude -98.433 -101.617 -99.000 -96.767 -100.583
Time Zone -6 -7 -6 -6 -6
Elevation 596 998 649 357 786
NSRDB Class II II II II II
Pool Years 12 12 12 12 12
NE
41.983
-97.433
-6
472
I
24
NE
41.117
-100.667
-6
847
I
24
NE NE NE NE
42.467 41.317 41.367 41.617
-98.683 -95.900 -96.017 -98.950
-6 -6 -6 -6
619 299 399 631
III I III II
12 12 13 12
NE
41.867
-103.600
-7
1202
I
24
NE NE NE NH
41.100 41.767 42.867 44.583
-102.983 -96.167 -100.550 -71.183
-7 -6 -6 -5
1313 312 789 353
II III I III
12 10 12 10
NH
43.200
-71.500
-5
106
I
24
NH NH NH NH NH NH NJ NJ NJ NJ NJ NJ
42.900 43.567 43.633 42.933 44.267 43.083 39.450 40.183 40.883 39.000 40.017 39.367
-72.267 -71.417 -72.300 -71.433 -71.300 -70.817 -74.567 -74.067 -74.283 -74.917 -74.600 -75.083
-5 -5 -5 -5 -5 -5 -5 -5 -5 -5 -5 -5
153 166 182 69 1910 31 18 26 53 7 45 21
II II II II II II I III II III II II
12 12 12 12 12 12 24 12 12 12 12 12
NJ
40.717
-74.183
-5
3
I
24
NJ
40.850
-74.067
-5
3
II
12
NJ
40.283
-74.817
-5
65
II
12
NM
35.040
-106.620
-7
1619
I
24
NM
32.333
-104.267
-7
985
II
12
NM
36.450
-103.150
-7
1512
II
12
NM NM NM
34.383 34.433 32.250
-103.317 -103.083 -107.717
-7 -7 -7
1309 1284 1348
II III II
12 12 12
NM
36.750
-108.233
-7
1675
II
12
State
40
NM NM NM
Latitude 35.517 32.850 32.283
Longitude -108.783 -106.100 -106.917
Time Zone -7 -7 -7
Elevation 1971 1248 1393
NSRDB Class I II II
Pool Years 12 12 12
NM
35.650
-105.150
-7
2093
II
12
NM
33.300
-104.533
-7
1112
I
12
NM
35.617
-106.083
-7
1934
II
12
NM NM
33.467 36.450
-105.533 -105.667
-7 -7
2078 2161
III III
10 12
NM
33.233
-107.267
-7
1478
II
12
NM NV NV NV
35.183 40.833 39.300 39.417
-103.600 -115.800 -114.850 -118.717
-7 -8 -8 -8
1235 1548 1909 1199
II II I II
21 24 24 12
NV
36.083
-115.150
-8
648
I
24
NV
40.067
-118.550
-8
1189
I
12
NV
36.630
-116.020
-8
935
I
12
NV
36.250
-115.033
-8
573
II
12
NV
39.483
-119.767
-8
1342
I
24
NV
38.067
-117.083
-8
1655
I
24
NV
40.900
-117.800
-8
1310
I
24
NY NY
44.383 42.750
-74.200 -73.800
-5 -5
520 84
II I
12 24
NY
42.200
-75.983
-5
488
I
24
NY
42.933
-78.733
-5
215
I
24
NY
42.167
-76.900
-5
291
II
12
NY NY
44.050 43.350
-75.717 -73.617
-5 -5
211 98
II II
12 12
NY
40.783
-73.100
-5
26
I
12
NY NY NY
42.150 44.933 41.700
-79.267 -74.850 -74.800
-5 -5 -5
525 65 428
II I II
12 24 12
NY
40.783
-73.967
-5
40
III
17
NY
40.650
-73.800
-5
5
I
12
NY
40.783
-73.883
-5
3
I
12
NY
43.100
-78.950
-5
180
II
12
USAF
Station Name
State
723627 747320 722695
GALLUP SEN CLARKE FLD HOLLOMAN AFB LAS CRUCES INTL LAS VEGAS MUNICIPAL ARPT ROSWELL INDUSTRIAL AIR PARK SANTA FE COUNTY MUNICIPAL AP SIERRA BLANCA RGNL TAOS MUNI APT(AWOS) TRUTH OR CONSEQUENCES MUNI AP TUCUMCARI FAA AP ELKO MUNICIPAL ARPT ELY YELLAND FIELD FALLON NAAS LAS VEGAS MCCARRAN INTL AP LOVELOCK DERBY FIELD MERCURY DESERT ROCK AP [SURFRAD] NELLIS AFB RENO TAHOE INTERNATIONAL AP TONOPAH AIRPORT WINNEMUCCA MUNICIPAL ARPT ADIRONDACK RGNL ALBANY COUNTY AP BINGHAMTON EDWIN A LINK FIELD BUFFALO NIAGARA INTL AP ELMIRA CORNING REGIONAL AP FORT DRUM/WHEELER-S GLENS FALLS AP ISLIP LONG ISL MACARTHUR AP JAMESTOWN (AWOS) MASSENA AP MONTICELLO(AWOS) NEW YORK CENTRAL PRK OBS BELV NEW YORK J F KENNEDY INT'L AR NEW YORK LAGUARDIA ARPT NIAGARA FALLS AF
723677 722680 723656 722683 723663 722710 723676 725825 724860 724885 723860 725805 723870 723865 724880 724855 725830 726228 725180 725150 725280 725156 743700 725185 725035 725235 726223 725145 725033 744860 725030 725287
41
USAF 725036 744864 725290 725038 725190 725197 726227 744865 725037 725210 725245 724297 725240 724280 724290 745700 725366 725246 724288 725360 725250 724286 723520 723565 723526 723550 723527 723525 723575 723566 723540 723530 723544
Station Name POUGHKEEPSIE DUTCHESS CO AP REPUBLIC ROCHESTER GREATER ROCHESTER I STEWART FIELD SYRACUSE HANCOCK INT'L ARPT UTICA ONEIDA COUNTY AP WATERTOWN AP WESTHAMPTON GABRESKI AP WHITE PLAINS WESTCHESTER CO A AKRON AKRON-CANTON REG AP BURKE LAKEFRONT CINCINNATI MUNICIPAL AP LUNKI CLEVELAND HOPKINS INTL AP COLUMBUS PORT COLUMBUS INTL A DAYTON INTERNATIONAL AIRPORT DAYTON WRIGHT PATTERSON AFB FINDLAY AIRPORT MANSFIELD LAHM MUNICIPAL ARPT OHIO STATE UNIVERSI TOLEDO EXPRESS AIRPORT YOUNGSTOWN REGIONAL AIRPORT ZANESVILLE MUNICIPAL AP ALTUS AFB BARTLESVILLE/PHILLI CLINTON-SHERMAN FORT SILL POST FIELD AF GAGE AIRPORT HOBART MUNICIPAL AP LAWTON MUNICIPAL MCALESTER MUNICIPAL AP OKLAHOMA CITY TINKER AFB OKLAHOMA CITY WILL ROGERS WOR OKLAHOMA CITY/WILEY
State
Latitude
Longitude
Time Zone
Elevation
NSRDB Class
Pool Years
NY
41.633
-73.883
-5
47
II
12
NY
40.717
-73.417
-5
26
II
12
NY
43.117
-77.683
-5
183
I
24
NY
41.500
-74.100
-5
177
II
12
NY
43.117
-76.100
-5
125
I
24
NY NY
43.150 44.000
-75.383 -76.017
-5 -5
217 97
II II
12 12
NY
40.850
-72.633
-5
20
II
12
NY
41.067
-73.717
-5
122
II
12
OH
40.917
-81.433
-5
368
I
24
OH
41.517
-81.683
-5
182
II
12
OH
39.100
-84.417
-5
149
II
12
OH
41.400
-81.850
-5
235
I
24
OH
39.983
-82.883
-5
247
I
24
OH
39.900
-84.217
-5
305
I
24
OH
39.833
-84.050
-5
250
II
12
OH
41.017
-83.667
-5
244
II
12
OH
40.817
-82.517
-5
395
I
24
OH
40.067
-83.067
-5
283
II
12
OH
41.583
-83.800
-5
204
I
24
OH
41.250
-80.667
-5
360
I
24
OH OK OK OK OK OK OK OK OK
39.950 34.650 36.767 35.333 34.650 36.300 35.000 34.567 34.900
-81.900 -99.267 -96.017 -99.200 -98.400 -99.767 -99.050 -98.417 -95.783
-5 -6 -6 -6 -6 -6 -6 -6 -6
268 414 218 586 369 668 478 338 232
II II II III II II II II II
12 12 12 10 12 12 12 12 12
OK
35.417
-97.383
-6
384
II
12
OK
35.383
-97.600
-6
398
II
24
OK
35.533
-97.650
-6
396
II
12
42
USAF 723546 723545 723560 723535 727910 726959 726886 726830 726945 726930 725895 726884 725976 725970 726917 726880 726980 726986 726985 726835 726904 726940 725975 725170 725126 725266 725124 725125 725260 725267 725118 725127 725116 725115 724080
Station Name PONCA CITY MUNICIPAL AP [SGP - ARM] STILLWATER RGNL TULSA INTERNATIONAL AIRPORT VANCE AFB ASTORIA REGIONAL AIRPORT AURORA STATE BAKER MUNICIPAL AP BURNS MUNICIPAL ARPT [UO] CORVALLIS MUNI EUGENE MAHLON SWEET ARPT [UO] KLAMATH FALLS INTL AP [UO] LA GRANDE MUNI AP LAKEVIEW (AWOS) MEDFORD ROGUE VALLEY INTL AP [ASHLAND - UO] NORTH BEND MUNI AIRPORT PENDLETON E OR REGIONAL AP PORTLAND INTERNATIONAL AP PORTLAND/HILLSBORO PORTLAND/TROUTDALE REDMOND ROBERTS FIELD ROSEBURG REGIONAL AP SALEM MCNARY FIELD SEXTON SUMMIT ALLENTOWN LEHIGH VALLEY INTL ALTOONA BLAIR CO ARPT BRADFORD REGIONAL AP BUTLER CO. (AWOS) DUBOIS FAA AP ERIE INTERNATIONAL AP FRANKLIN HARRISBURG CAPITAL CITY ARPT JOHNSTOWN CAMBRIA COUNTY AP LANCASTER MIDDLETOWN HARRISBURG INTL AP PHILADELPHIA INTERNATIONAL AP
State
Latitude
Longitude
Time Zone
Elevation
NSRDB Class
Pool Years
OK
36.610
-97.490
-6
318
II
12
OK
36.150
-97.083
-6
308
II
12
OK
36.200
-95.883
-6
198
II
24
OK
36.333
-97.917
-6
408
II
12
OR
46.150
-123.883
-8
3
II
24
OR OR
45.250 44.833
-122.767 -117.817
-8 -8
60 1027
III II
11 12
OR
43.520
-119.020
-8
1271
II
21
OR
44.483
-123.283
-8
77
II
12
OR
44.050
-123.070
-8
109
I
24
OR
42.220
-121.740
-8
1220
II
12
OR OR
45.283 42.167
-118.000 -120.400
-8 -8
827 1441
II II
12 12
OR
42.190
-122.700
-8
595
I
24
OR
43.417
-124.250
-8
2
II
24
OR
45.700
-118.833
-8
452
I
24
OR
45.600
-122.617
-8
6
I
24
OR OR OR OR OR OR
45.533 45.550 44.250 43.233 44.900 42.600
-122.950 -122.400 -121.167 -123.350 -123.000 -123.367
-8 -8 -8 -8 -8 -8
62 11 933 160 60 1168
II II II II I II
12 12 24 12 24 12
PA
40.650
-75.450
-5
119
I
24
PA PA PA PA PA PA
40.300 41.800 40.783 41.183 42.083 41.383
-78.317 -78.633 -79.950 -78.900 -80.183 -79.867
-5 -5 -5 -5 -5 -5
451 645 380 553 222 470
II I III II I II
12 24 12 12 24 12
PA
40.217
-76.850
-5
104
II
24
PA
40.317
-78.833
-5
695
II
12
PA
40.117
-76.300
-5
126
II
12
PA
40.200
-76.767
-5
92
I
12
PA
39.867
-75.233
-5
2
I
24
43
USAF 724085 725205 725200 725103 725128 725117 725130 725140 724086 785140 785145 785203 785350 785260 785263 725058 725054 725070 723125 722085 722080 723100 723106 723119 723120 747910 747915 747900 726590 726515 726525 726625 726540 726545 726685 726686 726620
Station Name PHILADELPHIA NE PHILADELPHIA PITTSBURGH ALLEGHENY CO AP PITTSBURGH INTERNATIONAL AP READING SPAATZ FIELD STATE COLLEGE [PENN STATE - SURFRAD] WASHINGTON (AWOS) WILKES-BARRE SCRANTON INTL AP WILLIAMSPORT REGIONAL AP WILLOW GROVE NAS AQUADILLA/BORINQUEN EUGENIO MARIA DE HO MERCEDITA ROOSEVELT ROADS SAN JUAN INTL ARPT SAN JUAN L M MARIN INTL AP BLOCK ISLAND STATE ARPT PAWTUCKET (AWOS) PROVIDENCE T F GREEN STATE AR ANDERSON COUNTY AP BEAUFORT MCAS CHARLESTON INTL ARPT COLUMBIA METRO ARPT FLORENCE REGIONAL AP GREENVILLE DOWNTOWN AP GREER GREENV'LSPARTANBRG AP MYRTLE BEACH AFB NORTH MYRTLE BEACH GRAND STRA SUMTER SHAW AFB ABERDEEN REGIONAL ARPT BROOKINGS (AWOS) CHAN GURNEY MUNI ELLSWORTH AFB HURON REGIONAL ARPT MITCHELL (AWOS) MOBRIDGE PIERRE MUNICIPAL AP RAPID CITY REGIONAL ARPT
State
Latitude
Longitude
Time Zone
Elevation
NSRDB Class
Pool Years
PA
40.083
-75.017
-5
30
II
12
PA
40.350
-79.917
-5
380
II
12
PA
40.500
-80.233
-5
350
I
24
PA
40.367
-75.967
-5
104
II
12
PA
40.720
-77.930
-5
376
II
12
PA
40.133
-80.283
-5
361
II
12
PA
41.333
-75.733
-5
284
I
24
PA
41.250
-76.917
-5
158
I
24
PA PR PR PR PR PR
40.200 18.500 18.250 18.000 18.250 18.417
-75.150 -67.133 -67.150 -66.550 -65.633 -66.000
-5 -4 -4 -4 -4 -4
102 72 9 8 12 19
II II II II III II
12 12 12 12 10 24
PR
18.433
-66.000
-4
3
III
10
RI RI
41.167 41.917
-71.583 -71.500
-5 -5
34 134
II II
12 12
RI
41.717
-71.433
-5
16
I
24
SC SC SC SC SC
34.500 32.483 32.900 33.950 34.183
-82.717 -80.717 -80.033 -81.117 -79.733
-5 -5 -5 -5 -5
232 10 12 65 44
II II I I II
12 12 24 24 12
SC
34.850
-82.350
-5
319
II
12
SC
34.900
-82.217
-5
292
I
24
SC
33.683
-78.933
-5
8
II
12
SC
33.817
-78.717
-5
10
II
12
SC
33.967
-80.467
-5
74
II
12
SD
45.450
-98.417
-6
398
I
12
SD SD SD SD SD SD SD
44.300 42.917 44.150 44.400 43.767 45.533 44.383
-96.817 -97.383 -103.100 -98.217 -98.033 -100.433 -100.283
-6 -6 -7 -6 -6 -7 -7
502 408 980 390 397 508 528
II II II I II II I
12 12 12 24 12 12 24
SD
44.050
-103.050
-7
963
I
24
44
SD
Latitude 43.583
Longitude -96.750
Time Zone -6
Elevation 433
NSRDB Class I
Pool Years 24
SD
44.933
-97.150
-6
532
II
12
TN
36.467
-82.400
-5
457
I
24
TN
35.033
-85.200
-5
204
I
24
TN TN
35.950 36.017
-85.083 -89.400
-6 -6
569 103
II II
12 12
TN
35.600
-88.917
-6
132
II
12
TN
35.817
-83.983
-5
293
I
24
TN
35.067
-89.983
-6
81
I
24
TN
36.117
-86.683
-6
177
I
24
TX TX TX
32.433 32.470 27.733
-99.850 -99.710 -98.033
-6 -6 -6
545 530 53
II I II
12 24 12
TX
34.990
-101.900
-6
1068
II
24
TX
30.290
-97.740
-6
213
I
12
TX
25.900
-97.433
-6
6
I
24
TX TX
30.317 34.433
-97.767 -100.283
-6 -6
198 595
III II
16 12
TX
30.583
-96.367
-6
96
II
12
TX
27.880
-97.630
-6
6
I
24
TX TX TX TX TX TX TX
27.683 28.450 33.633 36.017 32.850 32.967 32.683
-97.283 -99.217 -95.450 -102.550 -96.850 -96.833 -96.867
-6 -6 -6 -6 -6 -6 -6
6 141 171 1216 134 196 201
II II III II II II II
12 12 12 12 12 12 12
TX
32.900
-97.017
-6
171
I
24
TX TX TX
29.380 29.367 31.150
-100.910 -100.783 -97.400
-6 -6 -6
308 327 213
II II II
12 12 12
TX
31.770
-106.500
-7
1186
I
24
TX TX TX TX TX
31.133 32.983 32.817 32.767 29.300
-97.717 -97.317 -97.367 -97.450 -94.800
-6 -6 -6 -6 -6
280 226 209 185 16
II II II II II
12 12 12 12 12
USAF
Station Name
State
726510
SIOUX FALLS FOSS FIELD WATERTOWN MUNICIPAL AP BRISTOL TRI CITY AIRPORT CHATTANOOGA LOVELL FIELD AP CROSSVILLE MEMORIAL AP DYERSBURG MUNICIPAL AP JACKSON MCKELLAR-SIPES REGL A KNOXVILLE MCGHEE TYSON AP MEMPHIS INTERNATIONAL AP NASHVILLE INTERNATIONAL AP ABILENE DYESS AFB ABILENE REGIONAL AP [UT] ALICE INTL AP AMARILLO INTERNATIONAL AP [CANYON - UT] AUSTIN MUELLER MUNICIPAL AP [UT] BROWNSVILLE S PADRE ISL INTL CAMP MABRY CHILDRESS MUNICIPAL AP COLLEGE STATION EASTERWOOD FL CORPUS CHRISTI INTL ARPT [UT] CORPUS CHRISTI NAS COTULLA FAA AP COX FLD DALHART MUNICIPAL AP DALLAS LOVE FIELD DALLAS/ADDISON ARPT DALLAS/REDBIRD ARPT DALLAS-FORT WORTH INTL AP DEL RIO [UT] DEL RIO LAUGHLIN AFB DRAUGHON MILLER CEN EL PASO INTERNATIONAL AP [UT] FORT HOOD FORT WORTH ALLIANCE FORT WORTH MEACHAM FORT WORTH NAS GALVESTON/SCHOLES
726546 723183 723240 723265 723347 723346 723260 723340 723270 690190 722660 722517 723630 722540 722500 722544 723604 722445 722510 722515 722526 722587 722636 722583 722598 722599 722590 722610 722615 722577 722700 722570 722594 722596 722595 722420
45
TX TX
Latitude 30.683 33.067
Longitude -97.683 -96.067
Time Zone -6 -6
Elevation 240 163
NSRDB Class III II
Pool Years 12 12
TX
26.233
-97.650
-6
10
II
12
TX
29.367
-99.167
-6
280
III
10
TX
30.000
-95.367
-6
29
I
24
TX
29.570
-95.090
-6
6
II
12
TX
29.650
-95.283
-6
13
II
12
TX TX TX TX
30.067 31.083 27.500 27.570
-95.550 -97.683 -97.817 -99.490
-6 -6 -6 -6
46 258 17 142
II II II II
12 12 12 12
TX
32.290
-94.980
-6
146
II
12
TX
33.667
-101.817
-6
992
I
24
TX TX TX
31.233 30.367 31.483
-94.750 -104.017 -97.317
-6 -6 -6
86 1473 180
I III III
24 10 12
TX
26.310
-98.170
-6
30
II
12
TX
31.950
-102.183
-6
872
I
24
TX
32.783
-98.067
-6
284
II
12
TX TX
31.583 28.717
-94.717 -96.250
-6 -6
108 5
III II
12 12
TX
29.950
-94.017
-6
5
I
24
TX TX TX TX TX
29.533 31.067 28.083 31.350 29.533
-98.283 -97.833 -97.050 -100.500 -98.467
-6 -6 -6 -6 -6
232 312 8 584 247
II II II I I
12 12 12 24 24
TX
29.383
-98.583
-6
208
II
12
TX TX TX TX
29.333 32.350 28.867 31.617
-98.467 -95.400 -96.933 -97.233
-6 -6 -6 -6
176 166 35 152
III II I I
10 12 24 24
TX
33.983
-98.500
-6
314
II
24
TX UT UT
31.783 37.617 37.700
-103.200 -109.483 -112.150
-6 -7 -7
856 1841 2312
II II II
12 12 12
USAF
Station Name
State
722547 722588
GEORGETOWN (AWOS) GREENVILLE/MAJORS HARLINGEN RIO GRANDE VALLEY I HONDO MUNICIPAL AP HOUSTON BUSH INTERCONTINENTAL HOUSTON ELLINGTON AFB [CLEAR LAKE - UT] HOUSTON WILLIAM P HOBBY AP HOUSTON/D.W. HOOKS KILLEEN MUNI (AWOS) KINGSVILLE LAREDO INTL AP [UT] LONGVIEW GREGG COUNTY AP [OVERTON UT] LUBBOCK INTERNATIONAL AP LUFKIN ANGELINA CO MARFA AP MC GREGOR (AWOS) MCALLEN MILLER INTL AP [EDINBURG - UT] MIDLAND INTERNATIONAL AP MINERAL WELLS MUNICIPAL AP NACOGDOCHES (AWOS) PALACIOS MUNICIPAL AP PORT ARTHUR JEFFERSON COUNTY RANDOLPH AFB ROBERT GRAY AAF ROCKPORT/ARANSAS CO SAN ANGELO MATHIS FIELD SAN ANTONIO INTL AP SAN ANTONIO KELLY FIELD AFB SAN ANTONIO/STINSON TYLER/POUNDS FLD VICTORIA REGIONAL AP WACO REGIONAL AP WICHITA FALLS MUNICIPAL ARPT WINK WINKLER COUNTY AP BLANDING BRYCE CNYN FAA AP
722505 722533 722430 722436 722435 722429 722575 722516 722520 722470 722670 722446 722640 722563 722506 722650 722597 722499 722555 722410 722536 722576 722524 722630 722530 722535 722523 722448 722550 722560 723510 722656 724723 724756
46
UT UT UT UT UT UT UT UT
Latitude 37.700 39.333 38.367 38.580 41.117 41.200 40.217 37.083
Longitude -113.100 -112.583 -110.717 -109.540 -111.967 -112.017 -111.717 -113.600
Time Zone -7 -7 -7 -7 -7 -7 -7 -7
Elevation 1703 1414 1313 1000 1459 1362 1369 896
NSRDB Class I II II III II II II II
Pool Years 24 12 12 10 12 12 12 12
UT
40.770
-111.970
-7
1288
I
24
UT
40.433
-109.517
-7
1608
II
12
UT
40.717
-114.033
-8
1291
II
12
VA VA VA VA VA VA VA VA VA VA VA
36.683 38.133 36.567 38.717 37.183 37.350 36.700 36.767 37.950 37.083 39.083
-82.033 -78.450 -79.333 -77.183 -77.517 -78.433 -76.900 -80.817 -79.833 -76.350 -77.567
-5 -5 -5 -5 -5 -5 -5 -5 -5 -5 -5
631 190 176 27 60 125 12 834 1156 3 119
III II II II III III III III III II III
10 12 12 12 12 11 11 11 12 12 11
VA
37.333
-79.200
-5
286
I
24
VA VA VA VA VA
38.717 36.900 36.633 37.650 37.133
-77.517 -81.350 -80.017 -75.767 -76.500
-5 -5 -5 -5 -5
59 780 287 15 13
III III III III II
12 10 10 11 12
VA
36.900
-76.200
-5
7
I
24
VA VA VA VA
36.950 36.817 37.133 38.500
-76.283 -76.033 -80.683 -77.300
-5 -5 -5 -5
10 8 642 4
II II III II
12 12 11 12
VA
37.517
-77.317
-5
50
I
24
VA VA VA VA
37.317 38.267 38.267 37.217
-79.967 -77.450 -78.900 -80.417
-5 -5 -5 -5
350 26 366 650
I III II III
24 11 12 11
VA
38.980
-77.470
-5
82
I
24
VA
38.867
-77.033
-5
3
I
12
VA
39.150
-78.150
-5
222
III
11
USAF
Station Name
State
724755 724795 724735 724776 725755 725750 725724 724754
CEDAR CITY MUNICIPAL AP DELTA HANKSVILLE MOAB/CANYONLANDS [UO] OGDEN HILL AFB OGDEN HINKLEY AIRPORT PROVO MUNI (AWOS) SAINT GEORGE (AWOS) SALT LAKE CITY INT'L ARPT [ISIS] VERNAL WENDOVER USAF AUXILIARY FIELD ABINGDON CHARLOTTESVILLE FAA DANVILLE FAA AP DAVISON AAF DINWIDDIE CO FARMVILLE FRANKLIN NAAS HILLSVILLE HOT SPRINGS/INGALLS LANGLEY AFB LEESBURG/GODFREY LYNCHBURG REGIONAL ARPT MANASSAS MUNI(AWOS) MARION / WYTHEVILLE MARTINSVILLE MELFA/ACCOMACK ARPT NEWPORT NEWS NORFOLK INTERNATIONAL AP NORFOLK NAS OCEANA NAS PULASKI QUANTICO MCAS RICHMOND INTERNATIONAL AP ROANOKE REGIONAL AP SHANNON ARPT STAUNTON/SHENANDOAH VIRGINIA TECH ARPT WASHINGTON DC DULLES INT'L AR [STERLING - ISIS] WASHINGTON DC REAGAN AP WINCHESTER RGNL
725720 725705 725810 724058 724016 724106 724037 724014 724017 723083 724107 724115 745980 724055 724100 724036 724056 745985 724026 723086 723080 723085 723075 724116 724035 724010 724110 724033 724105 724113 724030 724050 724053
47
USAF 724117 785430 726170 726145 725165 726115 727976 727928 727826 727855 727856 742070 727840 727923 727924 727827 727920 727845 727857 727970 727934 727935 727930 727937 727850 727815 742060 727938 726988 727926 727846 727825 690230 727885 727810 726626 726457 726435 726450
Station Name WISE/LONESOME PINE CHARLOTTE AMALIE HARRY S TRUM BURLINGTON INTERNATIONAL AP MONTPELIER AP RUTLAND STATE SPRINGFIELD/HARTNES BELLINGHAM INTL AP BREMERTON NATIONAL EPHRATA AP FCWOS FAIRCHILD AFB FELTS FLD GRAY AAF HANFORD HOQUIAM AP KELSO WB AP MOSES LAKE GRANT COUNTY AP OLYMPIA AIRPORT PASCO PULLMAN/MOSCOW RGNL QUILLAYUTE STATE AIRPORT RENTON MUNI SEATTLE BOEING FIELD [ISIS] SEATTLE SEATTLETACOMA INTL A SNOHOMISH CO SPOKANE INTERNATIONAL AP [CHENEY - UO] STAMPEDE PASS TACOMA MCCHORD AFB TACOMA NARROWS THE DALLES MUNICIPAL ARPT TOLEDO-WINLOCK MEM WALLA WALLA CITY COUNTY AP WENATCHEE/PANGBORN WHIDBEY ISLAND NAS WILLIAM R FAIRCHILD YAKIMA AIR TERMINAL ANTIGO\LANG(AWOS) APPLETON/OUTAGAMIE EAU CLAIRE COUNTY AP GREEN BAY AUSTIN STRAUBEL INT
VA
Latitude 36.983
Longitude -82.533
Time Zone -5
Elevation 817
NSRDB Class III
Pool Years 11
VI
18.350
-64.967
-4
6
II
12
VT
44.467
-73.150
-5
101
I
24
VT VT VT WA WA WA WA WA WA WA WA WA
44.200 43.517 43.350 48.800 47.483 47.300 47.633 47.683 47.083 46.567 46.983 46.133
-72.567 -72.950 -72.517 -122.533 -122.750 -119.517 -117.650 -117.317 -122.583 -119.600 -123.933 -122.900
-5 -5 -5 -8 -8 -8 -8 -8 -8 -8 -8 -8
343 246 176 45 137 384 743 610 90 223 4 5
II II III II II II II II II II II II
12 12 10 12 12 12 12 12 12 12 12 12
WA
47.200
-119.317
-8
364
II
12
WA WA WA
46.967 46.267 46.750
-122.900 -119.117 -117.117
-8 -8 -8
63 136 778
I II II
24 12 12
WA
47.933
-124.567
-8
55
I
24
WA
47.483
-122.217
-8
10
II
12
WA
47.680
-122.250
-8
20
II
12
WA
47.467
-122.317
-8
122
I
24
WA
47.900
-122.283
-8
189
II
12
WA
47.490
-117.589
-8
777
I
24
WA WA WA
47.283 47.150 47.267
-121.333 -122.483 -122.583
-8 -8 -8
1206 88 91
II II II
12 12 12
WA
45.617
-121.150
-8
73
II
12
WA
46.483
-122.800
-8
113
II
12
WA
46.100
-118.283
-8
355
II
12
WA WA WA WA WI WI WI
47.400 48.350 48.117 46.567 45.150 44.250 44.867
-120.200 -122.667 -123.500 -120.550 -87.150 -88.517 -91.483
-8 -8 -8 -8 -5 -6 -6
379 10 91 324 464 280 271
II II III I III II I
12 12 12 24 10 12 24
WI
44.483
-88.133
-6
209
I
24
State
48
WI
Latitude 42.617
Longitude -89.033
Time Zone -6
Elevation 246
NSRDB Class III
Pool Years 10
WI
43.867
-91.250
-6
198
I
24
WI
43.200
-90.183
-6
219
II
12
WI
43.130
-89.330
-6
262
I
24
WI WI
44.133 44.633
-87.683 -90.183
-6 -6
198 389
II III
12 12
WI
42.950
-87.900
-6
205
I
24
WI WI WI WI WI WI WI WI WI
45.933 44.783 45.700 45.633 45.483 44.850 43.167 44.917 43.983
-89.733 -89.667 -90.400 -89.467 -91.717 -87.417 -88.717 -89.633 -88.550
-6 -6 -6 -6 -6 -5 -6 -6 -6
496 389 449 507 347 221 254 366 253
II II II II III II III II II
12 12 12 12 10 12 10 12 12
WV
37.800
-81.117
-5
763
I
12
WV
37.270
-81.240
-5
803
II
12
WV
38.383
-81.583
-5
310
I
24
WV
38.883
-79.850
-5
594
I
24
WV
39.283
-80.233
-5
380
II
12
WV
38.383
-82.550
-5
253
I
24
WV
37.867
-80.400
-5
702
II
12
WV
39.400
-77.983
-5
162
II
12
WV
39.650
-79.917
-5
378
II
12
WV
39.350
-81.433
-5
253
II
12
WV
40.183
-80.650
-5
359
II
12
WY
42.900
-106.467
-7
1627
I
24
WY
41.150
-104.800
-7
1867
I
24
WY WY WY WY WY
44.517 41.283 44.350 43.600 42.817
-109.017 -111.033 -105.533 -110.733 -108.733
-7 -7 -7 -7 -7
1553 2183 1230 2016 1694
II II II II I
12 12 12 12 24
WY
41.317
-105.683
-7
2215
II
12
WY
41.800
-107.200
-7
2053
II
12
USAF
Station Name
State
726415
JANESVILLE/ROCK CO. LA CROSSE MUNICIPAL ARPT LONE ROCK FAA AP MADISON DANE CO REGIONAL ARPT [ISIS] MANITOWAC MUNI AWOS MARSHFIELD MUNI MILWAUKEE MITCHELL INTL AP MINOCQUA/WOODRUFF MOSINEE/CENTRAL WI PHILLIPS/PRICE CO. RHINELANDER ONEIDA RICE LAKE MUNICIPAL STURGEON BAY WATERTOWN WAUSAU MUNICIPAL ARPT WITTMAN RGNL BECKLEY RALEIGH CO MEM AP BLUEFIELD/MERCER CO [NREL] CHARLESTON YEAGER ARPT ELKINS ELKINS-RANDOLPH CO ARP HARRISON MARION RGN HUNTINGTON TRI-STATE ARPT LEWISBURG/GREENBRIE MARTINSBURG EASTERN WV REG AP MORGANTOWN HART FIELD PARKERSBURG WOOD COUNTY AP WHEELING OHIO COUNTY AP CASPER NATRONA CO INTL AP CHEYENNE MUNICIPAL ARPT CODY MUNI (AWOS) EVANSTON/BURNS FLD GILLETTE/GILLETTE-C JACKSON HOLE LANDER HUNT FIELD LARAMIE GENERAL BREES FIELD RAWLINS MUNICIPAL AP
726430 726416 726410 726455 726574 726400 726404 726465 726468 727415 726467 726458 726464 726463 726456 724120 724125 724140 724170 724175 724250 724127 724177 724176 724273 724275 725690 725640 726700 725775 726650 725776 725760 725645 725745
49
Form Approved OMB No. 0704-0188
REPORT DOCUMENTATION PAGE
The public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing the burden, to Department of Defense, Executive Services and Communications Directorate (0704-0188). Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number.
PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ORGANIZATION. 1. REPORT DATE (DD-MM-YYYY) 2. REPORT TYPE
April 2008 4.
3.
DATES COVERED (From - To)
Technical Report
TITLE AND SUBTITLE
5a. CONTRACT NUMBER
DE-AC36-99-GO10337
Users Manual for TMY3 Data Sets
5b. GRANT NUMBER
5c. PROGRAM ELEMENT NUMBER
6.
AUTHOR(S)
5d. PROJECT NUMBER
S. Wilcox and W. Marion
NREL/TP-581-43156 5e. TASK NUMBER
PVA7-6101 5f. WORK UNIT NUMBER
7.
PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES)
National Renewable Energy Laboratory 1617 Cole Blvd. Golden, CO 80401-3393 9.
8.
PERFORMING ORGANIZATION REPORT NUMBER
NREL/TP-581-43156
SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES)
10. SPONSOR/MONITOR'S ACRONYM(S)
NREL 11. SPONSORING/MONITORING AGENCY REPORT NUMBER 12. DISTRIBUTION AVAILABILITY STATEMENT
National Technical Information Service U.S. Department of Commerce 5285 Port Royal Road Springfield, VA 22161 13. SUPPLEMENTARY NOTES 14. ABSTRACT (Maximum 200 Words)
This users manual descirbes how to obtain and interpret the data in the Typical Meteorological Year version 3 (TMY3) data sets. These data sets are an update to the TMY2 data released by NREL in 1994.
15. SUBJECT TERMS
TMY; typical meteorological year; NSRDB; National Solar Radiation Data Base; TMY3 16. SECURITY CLASSIFICATION OF: a. REPORT
b. ABSTRACT
Unclassified
Unclassified
c. THIS PAGE
Unclassified
17. LIMITATION 18. NUMBER OF ABSTRACT OF PAGES
UL
19a. NAME OF RESPONSIBLE PERSON
19b. TELEPHONE NUMBER (Include area code) Standard Form 298 (Rev. 8/98) Prescribed by ANSI Std. Z39.18
F1147-E(09/2007)
