#------------------------------------------------- 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: 2026-01-18 21:00 to 2026-01-21 20:00 # # 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: 2026-01-18 21:00 to 2026-01-21 20:00 # # As of: Jan 21, 2026, 8:04:47 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) 2026-01-18 21:00,31.0,26.40,2.5,,0.00,30.03,1.9,0.7,189 2026-01-18 22:00,30.0,26.30,2.5,,0.00,30.03,1.9,0.7,194 2026-01-18 23:00,30.0,26.30,2.5,,0.00,30.06,2.2,0.9,195 2026-01-19 00:00,30.0,26.30,2.5,,0.00,30.06,2.4,0.9,196 2026-01-19 01:00,30.0,26.30,2.5,,0.00,30.06,2.6,1.2,179 2026-01-19 02:00,30.0,26.30,2.5,,0.01,30.06,2.6,1.1,190 2026-01-19 03:00,30.0,26.30,2.5,,0.00,30.06,2.7,1.1,192 2026-01-19 04:00,30.0,26.30,2.5,,0.00,30.06,2.0,1.1,192 2026-01-19 05:00,30.0,26.30,2.5,,0.00,30.06,2.2,1.2,192 2026-01-19 06:00,30.0,26.30,2.5,,0.00,30.06,2.3,1.3,190 2026-01-19 07:00,30.0,26.30,2.5,,0.00,30.06,2.2,1.3,185 2026-01-19 08:00,29.0,26.30,2.5,,0.00,30.06,2.7,1.4,190 2026-01-19 09:00,30.0,26.30,2.5,,1.68,30.06,2.3,1.2,192 2026-01-19 10:00,30.0,26.30,2.5,,13.97,30.06,2.1,0.9,200 2026-01-19 11:00,30.0,26.30,2.5,,30.86,30.06,1.9,0.9,206 2026-01-19 12:00,31.0,26.30,2.5,,40.89,30.09,2.3,0.9,192 2026-01-19 13:00,32.0,26.30,2.5,,52.56,30.09,3.1,0.9,177 2026-01-19 14:00,34.0,26.30,2.4,,48.00,30.09,3.3,0.4,181 2026-01-19 15:00,33.0,26.30,2.4,,25.54,30.09,2.7,0.7,176 2026-01-19 16:00,33.0,26.30,2.4,,9.57,30.09,2.0,0.3,188 2026-01-19 17:00,34.0,26.30,2.4,,0.00,30.09,1.8,0.6,178 2026-01-19 18:00,33.0,26.30,2.4,,0.00,30.09,3.1,1.0,142 2026-01-19 19:00,33.0,26.30,2.5,,0.00,30.09,2.2,0.5,195 2026-01-19 20:00,32.0,26.30,2.5,,0.00,30.09,2.6,0.6,146 2026-01-19 21:00,32.0,26.30,2.5,,0.00,30.09,2.2,0.5,194 2026-01-19 22:00,32.0,26.40,2.5,,0.00,30.09,2.3,0.4,173 2026-01-19 23:00,33.0,26.30,2.5,,0.00,30.12,2.3,0.7,191 2026-01-20 00:00,33.0,26.40,2.5,,0.00,30.12,3.6,1.2,190 2026-01-20 01:00,33.0,26.30,2.5,,0.00,30.12,3.2,0.7,182 2026-01-20 02:00,33.0,26.40,2.5,,0.00,30.12,2.1,0.5,197 2026-01-20 03:00,34.0,26.40,2.5,,0.00,30.12,2.3,1.1,193 2026-01-20 04:00,32.0,26.40,2.5,,0.00,30.12,2.6,1.0,193 2026-01-20 05:00,32.0,26.40,2.5,,0.00,30.12,2.5,1.2,188 2026-01-20 06:00,31.0,26.40,2.5,,0.00,30.12,2.8,1.5,182 2026-01-20 07:00,31.0,26.40,2.5,,0.00,30.12,2.4,1.2,187 2026-01-20 08:00,31.0,26.40,2.5,,0.00,30.09,3.2,1.1,180 2026-01-20 09:00,31.0,26.40,2.5,,2.03,30.09,2.8,1.2,184 2026-01-20 10:00,31.0,26.40,2.5,,24.80,30.09,2.5,0.7,193 2026-01-20 11:00,32.0,26.40,2.5,,85.70,30.09,2.2,0.3,87 2026-01-20 12:00,33.0,26.40,2.5,,72.49,30.12,1.7,0.2,155 2026-01-20 13:00,34.0,26.40,2.5,,60.49,30.12,3.4,0.5,329 2026-01-20 14:00,34.0,26.40,2.5,,71.15,30.09,2.7,0.4,12 2026-01-20 15:00,34.0,26.30,2.4,,45.79,30.09,2.4,0.4,97 2026-01-20 16:00,33.0,26.40,2.5,,16.76,30.06,4.5,0.6,145 2026-01-20 17:00,33.0,26.40,2.5,,0.03,30.06,1.8,0.5,182 2026-01-20 18:00,32.0,26.40,2.5,,0.00,30.06,1.6,0.3,190 2026-01-20 19:00,33.0,26.40,2.5,,0.02,30.06,1.3,0.4,168 2026-01-20 20:00,33.0,26.40,2.5,,0.00,30.06,1.5,0.4,184 2026-01-20 21:00,31.0,26.40,2.5,,0.18,30.06,2.1,0.6,189 2026-01-20 22:00,31.0,26.40,2.5,,0.08,30.06,1.9,0.6,196 2026-01-20 23:00,31.0,26.40,2.5,,0.00,30.06,2.3,0.9,187 2026-01-21 00:00,31.0,26.40,2.5,,0.00,30.03,1.6,0.5,187 2026-01-21 01:00,30.0,26.40,2.5,,0.00,30.06,1.3,0.4,189 2026-01-21 02:00,29.0,26.40,2.5,,0.00,30.03,1.6,0.5,166 2026-01-21 03:00,31.0,26.40,2.5,,0.00,30.03,1.4,0.3,178 2026-01-21 04:00,30.0,26.40,2.5,,0.00,30.03,1.4,0.5,175 2026-01-21 05:00,30.0,26.40,2.5,,0.00,30.00,1.8,0.4,182 2026-01-21 06:00,30.0,26.40,2.5,,0.00,30.00,2.4,0.8,174 2026-01-21 07:00,30.0,26.40,2.5,,0.00,30.00,1.7,0.4,188 2026-01-21 08:00,30.0,26.40,2.5,,0.00,30.00,1.7,0.7,195 2026-01-21 09:00,30.0,26.40,2.5,,3.40,29.97,2.1,0.4,204 2026-01-21 10:00,30.0,26.40,2.5,,14.00,30.00,1.9,0.4,202 2026-01-21 11:00,30.0,26.40,2.5,,48.15,30.00,1.7,0.4,199 2026-01-21 12:00,31.0,26.40,2.5,,50.45,29.97,1.9,0.7,196 2026-01-21 13:00,31.0,26.40,2.5,,60.53,29.97,1.4,0.2,212 2026-01-21 14:00,32.0,26.40,2.5,,49.90,29.97,1.7,0.3,198 2026-01-21 15:00,32.0,26.40,2.4,,32.75,29.97,1.6,0.4,179 2026-01-21 16:00,32.0,26.40,2.4,,13.64,29.97,1.1,0.1,214 2026-01-21 17:00,32.0,26.40,2.5,,0.29,29.97,1.3,0.2,176 2026-01-21 18:00,32.0,26.40,2.4,,0.00,29.97,1.3,0.3,163 2026-01-21 19:00,32.0,26.40,2.4,,,29.97,,,