#------------------------------------------------- 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: 2025-07-03 13:00 to 2025-07-06 12:00 # # 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: 2025-07-03 13:00 to 2025-07-06 12:00 # # As of: Jul 6, 2025, 12:54:20 PM 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) 2025-07-03 13:00,56.0,69.10,0.0,,203.70,29.68,6.6,2.1,141 2025-07-03 14:00,57.0,69.10,0.0,,244.80,29.68,8.7,2.5,96 2025-07-03 15:00,56.0,69.10,0.0,,180.10,29.71,11.5,2.6,89 2025-07-03 16:00,57.0,69.10,0.0,,277.50,29.71,9.6,2.9,104 2025-07-03 17:00,58.0,69.10,0.0,,264.60,29.71,12.0,3.6,151 2025-07-03 18:00,57.0,69.10,0.0,,151.70,29.74,7.4,2.3,122 2025-07-03 19:00,57.0,69.10,0.0,,81.10,29.74,10.7,2.5,164 2025-07-03 20:00,55.0,69.10,0.0,,38.66,29.74,6.5,1.6,176 2025-07-03 21:00,55.0,69.10,0.0,,9.93,29.74,9.0,2.7,181 2025-07-03 22:00,54.0,69.10,0.0,,3.04,29.74,10.4,3.6,176 2025-07-03 23:00,54.0,69.10,0.0,,0.08,29.77,6.8,2.2,195 2025-07-04 00:00,55.0,69.10,0.0,,0.01,29.77,5.0,1.5,162 2025-07-04 01:00,53.0,69.10,0.0,,0.01,29.77,4.2,1.4,166 2025-07-04 02:00,53.0,69.10,0.0,,0.03,29.77,5.9,1.5,165 2025-07-04 03:00,53.0,69.10,0.0,,0.54,29.77,3.7,0.8,160 2025-07-04 04:00,52.0,69.10,0.0,,11.72,29.77,3.6,1.2,170 2025-07-04 05:00,52.0,69.10,0.0,,67.15,29.77,5.3,1.5,173 2025-07-04 06:00,55.0,69.10,0.0,,204.70,29.77,8.2,2.0,152 2025-07-04 07:00,56.0,69.10,0.0,,349.20,29.77,10.7,2.6,98 2025-07-04 08:00,58.0,69.10,0.0,,501.90,29.77,11.7,3.1,90 2025-07-04 09:00,58.0,69.10,0.0,,617.20,29.77,7.1,2.2,144 2025-07-04 10:00,60.0,69.10,0.0,,424.30,29.77,8.9,2.4,177 2025-07-04 11:00,57.0,69.10,0.0,,690.40,29.77,11.3,3.9,151 2025-07-04 12:00,61.0,69.00,0.0,,822.00,29.77,12.9,4.3,127 2025-07-04 13:00,61.0,69.00,0.0,,849.00,29.77,15.0,6.2,154 2025-07-04 14:00,61.0,69.00,0.0,,481.60,29.77,9.4,2.8,342 2025-07-04 15:00,58.0,69.00,,,423.70,29.77,7.1,2.5,322 2025-07-04 16:00,60.0,69.00,0.0,,552.20,29.77,7.1,2.3,326 2025-07-04 17:00,60.0,69.00,0.0,,426.00,29.74,5.5,1.7,295 2025-07-04 18:00,60.0,69.00,,,340.30,29.74,6.7,1.9,15 2025-07-04 19:00,59.0,69.00,,,189.30,29.74,8.0,3.0,126 2025-07-04 20:00,57.0,69.00,,,47.15,29.74,7.6,3.0,141 2025-07-04 21:00,55.0,69.10,,,19.04,29.74,7.3,2.9,171 2025-07-04 22:00,54.0,69.10,,,5.46,29.74,4.8,1.8,170 2025-07-04 23:00,50.0,69.10,,,0.00,29.74,5.0,1.2,194 2025-07-05 00:00,47.0,69.10,0.0,,0.00,29.74,4.4,1.4,195 2025-07-05 01:00,46.0,69.10,0.0,,0.00,29.71,2.8,1.0,189 2025-07-05 02:00,46.0,69.10,0.0,,0.00,29.71,3.4,0.6,174 2025-07-05 03:00,47.0,69.10,0.0,,0.41,29.71,3.4,0.4,122 2025-07-05 04:00,48.0,69.10,0.0,,8.51,29.71,2.4,0.2,196 2025-07-05 05:00,49.0,69.10,0.0,,28.21,29.71,2.4,0.3,192 2025-07-05 06:00,51.0,69.10,0.0,,85.90,29.71,2.1,0.5,203 2025-07-05 07:00,54.0,69.10,0.0,,72.76,29.71,5.0,1.0,22 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,,,29.53,,,