#------------------------------------------------- WARNING -------------------------------------------- # # The data you have obtained from this automated Natural Resources Conservation Service # database are subject to revision regardless of indicated Quality Assurance level. # Data are released on condition that neither the NRCS nor the United States Government # may be held liable for any damages resulting from its use. # # SNOTEL air temperature data contains a known bias. This bias is rooted in the sensor # conversion equation and varies through the output range. Solutions are in development. # For more information go to Air Temperature Bias Correction. # # Help and Tutorials: https://www.nrcs.usda.gov/sites/default/files/2023-03/Report%20Generator%20Help%20Guide.pdf # Air Temperature Bias Correction: https://www.nrcs.usda.gov/wps/portal/wcc/home/snowClimateMonitoring/temperature/temperatureBiasCorrection/ # # Support Contact: usdafpacbc@servicenowservices.com # #------------------------------------------------------------------------------------------------------ # # Reporting Frequency: Hourly # Date Range: 2025-05-09 11:00 to 2025-05-12 10:00 # # Data for the following site(s) are contained in this file: # # SNOTEL 987: Port Graham, AK # # Data items provided in this file: # # Element Name Value Type Function Type Function Duration Base Data Measurement Units Sensor Depth Element Code Description # Air Temperature Observed Value None Instantaneous N/A Degrees fahrenheit N/A TOBS Instantaneously observed air temperature # Precipitation Accumulation Value None Instantaneous N/A Inches N/A PREC Water year accumulated precipitation # Snow Water Equivalent Value None Instantaneous N/A Inches N/A WTEQ Depth of water that would theoretically result if the entire snowpack were melted instantaneously # Snow Depth Value None Instantaneous N/A Inches N/A SNWD Total snow depth # Solar Radiation Average Value None Hour N/A Watts/meter squared N/A SRADV Average solar radiation # Barometric Pressure Value None Instantaneous N/A Inches hg N/A PRES Barometric pressure # Wind Speed Maximum Value None Hour N/A Miles/hour N/A WSPDX Maximum wind speed # Wind Speed Average Value None Hour N/A Miles/hour N/A WSPDV Average wind speed # Wind Direction Average Value None Hour N/A Degrees N/A WDIRV Average wind direction # # Quality Control flags included: # # Flag Name Description # V Valid Validated Data # N No Profile No profile for automated validation # E Edit Edit, minor adjustment for sensor noise # K Estimate Estimate # C Correction A different equation has been applied to the original sensor voltage # B Back Estimate Regression-based estimate for homogenizing collocated Snow Course and Snow Pillow data sets # X External Estimate External estimate # S Suspect Suspect data # M Missing Value is missing # # Quality Assurance flags included: # # Flag Name Description # U Unknown Unknown # R Raw No Human Review # P Provisional Preliminary Human Review # A Approved Processing and Final Review Completed # #------------------------------------------------------------------------------------------------------ # # Port Graham (987) # Alaska SNOTEL Site - 270 ft # Reporting Frequency: Hourly; Date Range: 2025-05-09 11:00 to 2025-05-12 10:00 # # As of: May 12, 2025, 10:11:04 AM GMT-08:00 # Date,Air Temperature Observed (degF),Precipitation Accumulation (in),Snow Water Equivalent (in),Snow Depth (in),Solar Radiation Average (watt/m2),Barometric Pressure (inch_Hg),Wind Speed Maximum (mph),Wind Speed Average (mph),Wind Direction Average (degree) 2025-05-09 11:00,45.0,61.70,0.0,,298.50,29.59,3.9,1.3,328 2025-05-09 12:00,47.0,61.70,0.0,,209.20,29.56,9.4,2.7,328 2025-05-09 13:00,43.0,61.70,0.0,,681.50,29.56,7.9,3.2,321 2025-05-09 14:00,48.0,61.70,0.0,,478.80,29.56,7.4,2.6,304 2025-05-09 15:00,48.0,61.70,0.0,,575.10,29.56,7.3,2.3,269 2025-05-09 16:00,51.0,61.70,0.0,,545.10,29.53,5.9,2.2,272 2025-05-09 17:00,50.0,61.70,0.0,,359.70,29.53,5.6,2.0,260 2025-05-09 18:00,49.0,61.70,0.1,,136.00,29.53,5.8,1.6,271 2025-05-09 19:00,47.0,61.70,0.1,,73.92,29.53,6.1,1.5,254 2025-05-09 20:00,44.0,61.70,0.1,,19.45,29.53,2.7,0.3,239 2025-05-09 21:00,41.0,61.80,0.1,,2.53,29.53,3.0,1.3,162 2025-05-09 22:00,39.0,61.80,0.0,,0.00,29.53,2.7,0.9,178 2025-05-09 23:00,37.0,61.80,0.0,,0.00,29.53,2.6,1.2,172 2025-05-10 00:00,36.0,61.80,0.0,0,0.00,29.53,3.0,1.1,179 2025-05-10 01:00,35.0,61.80,0.0,,0.00,29.56,3.2,1.1,183 2025-05-10 02:00,35.0,61.80,0.0,,0.00,29.56,2.1,1.1,183 2025-05-10 03:00,34.0,61.80,0.0,,0.00,29.56,2.8,1.6,174 2025-05-10 04:00,34.0,61.80,0.0,,2.04,29.56,5.7,2.7,147 2025-05-10 05:00,34.0,61.80,0.0,,17.13,29.56,5.5,2.1,157 2025-05-10 06:00,34.0,61.80,0.0,,163.80,29.56,4.0,1.3,130 2025-05-10 07:00,42.0,61.80,0.0,,335.90,29.56,5.5,1.5,6 2025-05-10 08:00,41.0,61.80,0.0,,460.40,29.56,6.5,2.1,1 2025-05-10 09:00,45.0,61.80,0.0,,573.40,29.56,7.8,3.9,352 2025-05-10 10:00,46.0,61.70,0.0,,665.30,29.59,8.6,3.9,353 2025-05-10 11:00,47.0,61.70,0.0,,728.30,29.59,7.4,3.6,344 2025-05-10 12:00,48.0,61.70,0.0,,754.70,29.59,9.4,3.9,350 2025-05-10 13:00,49.0,61.70,0.0,,732.30,29.62,8.5,4.2,346 2025-05-10 14:00,49.0,61.70,0.0,,695.40,29.62,8.5,3.2,335 2025-05-10 15:00,54.0,61.70,0.0,,631.20,29.62,7.1,2.8,319 2025-05-10 16:00,55.0,61.60,0.0,,521.40,29.62,9.2,3.9,343 2025-05-10 17:00,52.0,61.60,0.0,,412.30,29.65,7.4,2.8,336 2025-05-10 18:00,50.0,61.60,0.1,,178.40,29.65,5.7,2.2,337 2025-05-10 19:00,50.0,61.60,0.1,,126.40,29.65,4.2,0.9,336 2025-05-10 20:00,47.0,61.70,0.1,,19.78,29.68,2.5,1.1,193 2025-05-10 21:00,44.0,61.70,0.1,,2.84,29.68,5.1,2.0,169 2025-05-10 22:00,42.0,61.80,0.0,,0.00,29.68,6.9,2.8,138 2025-05-10 23:00,46.0,61.80,0.0,,0.00,29.71,8.8,4.0,134 2025-05-11 00:00,44.0,61.80,0.0,0,0.00,29.71,7.2,3.0,133 2025-05-11 01:00,44.0,61.80,0.0,,0.00,29.71,5.3,2.6,138 2025-05-11 02:00,43.0,61.80,0.0,,0.00,29.74,7.4,3.4,130 2025-05-11 03:00,43.0,61.80,0.0,,0.00,29.74,8.0,3.3,135 2025-05-11 04:00,44.0,61.80,0.0,,4.62,29.74,7.3,2.8,133 2025-05-11 05:00,43.0,61.80,0.0,,31.68,29.74,7.0,2.7,146 2025-05-11 06:00,44.0,61.80,0.0,,147.10,29.77,6.9,3.2,130 2025-05-11 07:00,48.0,61.80,0.0,,358.30,29.77,6.5,2.9,100 2025-05-11 08:00,51.0,61.80,0.0,,493.80,29.77,8.7,2.8,103 2025-05-11 09:00,53.0,61.70,0.0,,391.20,29.74,6.4,2.7,66 2025-05-11 10:00,52.0,61.70,0.0,,617.90,29.74,6.6,3.1,356 2025-05-11 11:00,54.0,61.70,0.0,,675.30,29.77,11.2,4.1,75 2025-05-11 12:00,56.0,61.70,0.0,,675.80,29.74,9.6,3.8,147 2025-05-11 13:00,55.0,61.70,0.0,,448.40,29.74,12.7,4.2,177 2025-05-11 14:00,54.0,61.70,0.0,,320.00,29.74,10.1,3.8,177 2025-05-11 15:00,54.0,61.70,0.1,,163.60,29.71,12.1,4.1,162 2025-05-11 16:00,50.0,61.70,0.1,,154.50,29.71,13.9,4.6,148 2025-05-11 17:00,49.0,61.70,0.1,,143.60,29.68,9.7,3.4,128 2025-05-11 18:00,47.0,61.70,0.1,,78.31,29.65,12.1,3.3,163 2025-05-11 19:00,46.0,61.70,0.1,,40.43,29.62,22.6,9.6,164 2025-05-11 20:00,44.0,61.80,0.1,,9.14,29.62,20.0,7.2,178 2025-05-11 21:00,44.0,61.80,0.1,,0.40,29.59,19.0,5.3,181 2025-05-11 22:00,43.0,61.80,0.1,,0.03,29.59,14.2,4.7,178 2025-05-11 23:00,42.0,61.80,0.0,,0.01,29.56,9.6,3.3,173 2025-05-12 00:00,42.0,61.90,0.0,0,0.01,29.53,10.8,4.4,169 2025-05-12 01:00,43.0,61.90,0.0,,0.04,29.47,18.4,7.1,174 2025-05-12 02:00,43.0,62.00,0.0,,0.03,29.47,13.5,5.9,175 2025-05-12 03:00,43.0,62.00,0.1,,0.07,29.44,17.4,7.4,162 2025-05-12 04:00,43.0,62.10,0.1,,1.06,29.44,21.4,8.7,156 2025-05-12 05:00,43.0,62.10,0.0,,7.03,29.41,12.4,3.7,127 2025-05-12 06:00,43.0,62.10,0.0,,21.15,29.44,11.4,2.9,130 2025-05-12 07:00,42.0,62.10,0.0,,72.69,29.44,12.4,3.5,209 2025-05-12 08:00,41.0,62.10,0.0,,258.90,29.44,22.2,6.4,202 2025-05-12 09:00,43.0,62.10,0.0,,,29.44,,,