#------------------------------------------------- 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: 2025-07-05 08:00 to 2025-07-08 07:00 # # 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: 2025-07-05 08:00 to 2025-07-08 07:00 # # As of: Jul 8, 2025, 7:15:54 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) 2025-07-05 08:00,53.0,69.10,0.0,,77.05,29.71,4.9,1.1,17 2025-07-05 09:00,54.0,69.10,0.0,,153.80,29.71,8.0,1.5,120 2025-07-05 10:00,56.0,69.10,0.0,,238.40,29.71,11.5,2.5,100 2025-07-05 11:00,57.0,69.10,0.0,,260.40,29.68,8.7,2.8,70 2025-07-05 12:00,58.0,69.10,0.0,,295.20,29.68,15.6,3.5,89 2025-07-05 13:00,58.0,69.10,0.0,,319.70,29.71,10.8,2.9,122 2025-07-05 14:00,59.0,69.10,0.0,,344.60,29.68,12.3,3.4,136 2025-07-05 15:00,59.0,69.10,0.0,,295.60,29.68,11.7,3.4,114 2025-07-05 16:00,59.0,69.10,0.0,,285.00,29.68,12.8,2.9,127 2025-07-05 17:00,59.0,69.10,0.0,,220.50,29.68,8.9,2.5,172 2025-07-05 18:00,58.0,69.10,,,130.20,29.65,7.1,1.9,172 2025-07-05 19:00,58.0,69.10,,,62.09,29.65,6.9,2.1,163 2025-07-05 20:00,57.0,69.10,,,25.03,29.62,6.3,2.3,155 2025-07-05 21:00,57.0,69.10,,,7.49,29.62,6.8,2.0,154 2025-07-05 22:00,56.0,69.10,,,0.85,29.62,4.1,0.7,183 2025-07-05 23:00,54.0,69.10,,,0.00,29.59,2.9,0.5,159 2025-07-06 00:00,54.0,69.10,,,0.00,29.59,2.0,0.5,189 2025-07-06 01:00,52.0,69.10,,,0.00,29.56,3.8,0.8,184 2025-07-06 02:00,52.0,69.10,0.0,,0.02,29.56,7.9,2.1,170 2025-07-06 03:00,52.0,69.10,0.0,,0.13,29.56,7.1,1.7,164 2025-07-06 04:00,50.0,69.20,0.0,,3.85,29.56,8.9,2.8,176 2025-07-06 05:00,49.0,69.20,0.0,,16.83,29.56,7.4,3.3,179 2025-07-06 06:00,50.0,69.20,0.0,,52.77,29.56,6.8,2.4,192 2025-07-06 07:00,50.0,69.20,0.0,,94.50,29.53,4.6,0.9,52 2025-07-06 08:00,51.0,69.20,0.0,,276.00,29.53,5.2,1.8,79 2025-07-06 09:00,53.0,69.20,0.0,,499.20,29.53,5.5,2.4,3 2025-07-06 10:00,53.0,69.20,0.0,,584.10,29.53,6.9,2.6,331 2025-07-06 11:00,53.0,69.20,0.0,,266.80,29.53,6.7,2.4,314 2025-07-06 12:00,51.0,69.20,0.0,,325.70,29.53,6.4,2.5,305 2025-07-06 13:00,52.0,69.20,0.0,,327.40,29.53,5.6,2.0,310 2025-07-06 14:00,53.0,69.20,0.0,,390.40,29.53,5.3,1.8,322 2025-07-06 15:00,52.0,69.20,0.0,,221.60,29.50,5.8,1.8,323 2025-07-06 16:00,51.0,69.20,0.0,,204.00,29.50,5.3,1.4,312 2025-07-06 17:00,50.0,69.20,,,121.80,29.50,3.8,1.3,315 2025-07-06 18:00,50.0,69.30,0.0,,144.70,29.50,5.7,1.3,327 2025-07-06 19:00,49.0,69.30,,,65.45,29.50,3.8,0.9,338 2025-07-06 20:00,49.0,69.30,0.0,,32.08,29.50,1.7,0.4,333 2025-07-06 21:00,49.0,69.30,0.0,,15.53,29.50,1.4,0.1,72 2025-07-06 22:00,49.0,69.40,0.0,,1.75,29.50,1.8,0.4,132 2025-07-06 23:00,49.0,69.40,0.0,,0.01,29.50,3.1,0.7,168 2025-07-07 00:00,48.0,69.40,0.0,,0.01,29.50,6.2,2.3,141 2025-07-07 01:00,47.0,69.40,0.0,,0.04,29.50,7.2,2.3,164 2025-07-07 02:00,49.0,69.40,0.0,,0.00,29.53,4.1,1.0,138 2025-07-07 03:00,47.0,69.40,0.0,,0.51,29.53,4.6,1.2,114 2025-07-07 04:00,47.0,69.40,0.0,,9.43,29.53,7.9,3.2,152 2025-07-07 05:00,47.0,69.40,0.0,,41.64,29.53,6.4,1.8,142 2025-07-07 06:00,48.0,69.40,0.0,,149.60,29.53,3.5,0.9,11 2025-07-07 07:00,49.0,69.40,0.0,,205.50,29.53,3.6,0.8,132 2025-07-07 08:00,51.0,69.40,0.0,,529.00,29.53,6.9,2.9,87 2025-07-07 09:00,53.0,69.30,0.0,,490.10,29.53,8.5,3.3,82 2025-07-07 10:00,54.0,69.30,0.0,,507.70,29.53,8.0,2.9,83 2025-07-07 11:00,56.0,69.30,0.0,,689.40,29.53,6.3,2.6,346 2025-07-07 12:00,57.0,69.30,0.0,,457.60,29.53,6.7,3.0,352 2025-07-07 13:00,55.0,69.30,0.0,,596.70,29.50,8.3,3.5,1 2025-07-07 14:00,56.0,69.30,0.0,,689.20,29.50,6.6,3.0,346 2025-07-07 15:00,59.0,69.20,0.0,,569.30,29.50,7.3,3.5,340 2025-07-07 16:00,57.0,69.20,0.0,,399.10,29.47,6.6,2.8,346 2025-07-07 17:00,57.0,69.20,0.0,,209.00,29.47,3.9,1.4,342 2025-07-07 18:00,58.0,69.30,0.0,,173.30,29.44,8.7,2.1,64 2025-07-07 19:00,58.0,69.30,,,125.10,29.44,6.3,2.5,80 2025-07-07 20:00,57.0,69.30,,,65.06,29.44,6.8,2.2,94 2025-07-07 21:00,55.0,69.30,,,22.41,29.41,6.7,1.8,162 2025-07-07 22:00,54.0,69.30,,,2.35,29.41,7.1,2.6,172 2025-07-07 23:00,54.0,69.30,0.0,,0.03,29.41,8.0,3.4,161 2025-07-08 00:00,55.0,69.30,0.0,,0.01,29.38,7.0,2.8,147 2025-07-08 01:00,54.0,69.30,,,0.00,29.38,7.6,3.0,103 2025-07-08 02:00,54.0,69.30,,,0.02,29.38,5.6,1.7,76 2025-07-08 03:00,56.0,69.40,0.0,,0.34,29.38,8.1,1.8,352 2025-07-08 04:00,55.0,69.30,0.0,,9.23,29.38,5.2,1.6,11 2025-07-08 05:00,55.0,69.30,0.0,,68.08,29.35,10.2,2.3,340 2025-07-08 06:00,56.0,69.30,0.0,,,29.35,,,