#------------------------------------------------- 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: 2026-05-15 17:00 to 2026-05-18 16:00 # # Data for the following site(s) are contained in this file: # # SNOTEL 641: Frostbite Bottom, 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 # Relative Humidity Value None Instantaneous N/A Percent N/A RHUM Relative humidity # Solar Radiation Average Value None Hour N/A Watts/meter squared N/A SRADV Average solar radiation # 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 # #------------------------------------------------------------------------------------------------------ # # Frostbite Bottom (641) # Alaska SNOTEL Site - 2690 ft # Reporting Frequency: Hourly; Date Range: 2026-05-15 17:00 to 2026-05-18 16:00 # # As of: May 18, 2026, 4:22:57 PM GMT-08:00 # Date,Air Temperature Observed (degF),Precipitation Accumulation (in),Snow Water Equivalent (in),Snow Depth (in),Relative Humidity (pct),Solar Radiation Average (watt/m2),Wind Speed Maximum (mph),Wind Speed Average (mph),Wind Direction Average (degree) 2026-05-15 17:00,38.0,19.5,11.6,28,80.00,130.60,4.1,2.0,271 2026-05-15 18:00,37.0,19.5,11.6,28,82.00,108.40,5.3,3.0,270 2026-05-15 19:00,37.0,19.5,11.6,28,83.00,58.27,4.8,2.8,260 2026-05-15 20:00,37.0,19.5,11.6,28,79.00,20.50,5.9,2.1,248 2026-05-15 21:00,38.0,19.5,11.5,28,67.00,4.64,3.9,1.7,236 2026-05-15 22:00,38.0,19.5,11.5,28,66.00,0.53,6.0,2.4,230 2026-05-15 23:00,39.0,19.5,11.5,28,60.00,0.32,8.2,2.7,222 2026-05-16 00:00,38.0,19.5,11.5,28,60.00,0.29,10.9,4.2,211 2026-05-16 01:00,37.0,19.6,11.5,28,65.00,0.25,9.5,3.8,193 2026-05-16 02:00,36.0,19.6,11.4,28,67.00,0.08,11.1,2.9,209 2026-05-16 03:00,35.0,19.5,11.4,28,68.00,0.87,10.8,3.9,215 2026-05-16 04:00,35.0,19.5,11.4,28,67.00,14.06,7.7,3.2,225 2026-05-16 05:00,35.0,19.5,11.4,28,67.00,140.60,8.8,2.3,248 2026-05-16 06:00,36.0,19.5,11.4,28,64.00,256.20,8.8,2.5,307 2026-05-16 07:00,38.0,19.6,11.4,28,61.00,369.60,3.9,1.8,63 2026-05-16 08:00,38.0,19.6,11.4,27,65.00,450.20,8.2,1.6,49 2026-05-16 09:00,38.0,19.5,11.3,28,62.00,592.50,13.9,5.3,117 2026-05-16 10:00,39.0,19.4,11.3,28,62.00,631.60,12.8,4.7,165 2026-05-16 11:00,40.0,19.5,11.3,28,52.00,775.60,14.5,5.2,130 2026-05-16 12:00,41.0,19.5,11.3,28,51.00,600.70,14.0,4.6,129 2026-05-16 13:00,41.0,19.4,11.3,27,47.00,821.00,21.2,7.5,108 2026-05-16 14:00,41.0,19.3,11.2,27,46.00,375.80,17.6,7.5,109 2026-05-16 15:00,41.0,19.5,11.3,27,46.00,674.80,17.5,4.7,90 2026-05-16 16:00,40.0,19.4,11.2,27,46.00,494.80,18.2,5.2,191 2026-05-16 17:00,40.0,19.4,11.2,27,44.00,266.50,19.8,6.0,198 2026-05-16 18:00,38.0,19.5,11.1,27,47.00,148.90,15.5,3.7,315 2026-05-16 19:00,38.0,19.5,11.1,27,53.00,77.27,12.4,3.1,15 2026-05-16 20:00,38.0,19.5,11.1,27,53.00,26.39,7.7,2.6,290 2026-05-16 21:00,36.0,19.5,11.0,27,53.00,3.68,9.3,2.7,201 2026-05-16 22:00,36.0,19.5,11.0,27,52.00,0.47,8.7,2.8,195 2026-05-16 23:00,36.0,19.5,11.0,27,55.00,0.22,4.9,1.9,218 2026-05-17 00:00,36.0,19.5,11.0,27,55.00,0.31,11.0,4.4,227 2026-05-17 01:00,36.0,19.5,11.0,27,57.00,0.32,8.3,3.3,226 2026-05-17 02:00,35.0,19.5,10.9,27,57.00,0.30,6.2,3.3,232 2026-05-17 03:00,35.0,19.5,10.9,27,60.00,0.45,3.7,1.6,251 2026-05-17 04:00,33.0,19.5,10.9,27,70.00,4.40,6.2,2.2,309 2026-05-17 05:00,34.0,19.5,10.9,27,66.00,14.92,7.1,3.5,42 2026-05-17 06:00,33.0,19.5,10.9,27,70.00,28.42,6.2,2.9,295 2026-05-17 07:00,34.0,19.5,10.9,27,62.00,49.09,5.2,2.3,206 2026-05-17 08:00,34.0,19.5,10.9,26,65.00,92.50,6.8,2.8,206 2026-05-17 09:00,36.0,19.5,10.9,26,56.00,202.90,10.6,4.3,179 2026-05-17 10:00,38.0,19.6,10.9,26,52.00,236.60,9.1,3.3,194 2026-05-17 11:00,38.0,19.5,10.8,26,55.00,326.80,8.8,3.5,218 2026-05-17 12:00,39.0,19.5,10.8,26,63.00,247.40,13.7,4.5,249 2026-05-17 13:00,39.0,19.5,10.8,26,58.00,197.50,11.1,3.1,134 2026-05-17 14:00,38.0,19.5,10.8,26,60.00,247.10,11.0,3.6,40 2026-05-17 15:00,38.0,19.5,10.8,26,59.00,266.50,14.6,3.4,99 2026-05-17 16:00,38.0,19.5,10.8,26,61.00,243.50,14.8,3.9,200 2026-05-17 17:00,38.0,19.5,10.8,26,63.00,195.90,9.3,2.8,184 2026-05-17 18:00,37.0,19.5,10.8,26,68.00,157.60,6.4,1.9,220 2026-05-17 19:00,36.0,19.5,10.8,26,72.00,110.80,5.6,1.7,202 2026-05-17 20:00,36.0,19.5,10.8,26,73.00,42.82,6.0,1.5,214 2026-05-17 21:00,36.0,19.5,10.8,26,70.00,6.71,8.0,1.7,277 2026-05-17 22:00,35.0,19.5,10.8,26,71.00,0.56,7.9,1.9,231 2026-05-17 23:00,35.0,19.5,10.8,26,69.00,0.29,7.3,2.4,217 2026-05-18 00:00,35.0,19.5,10.8,26,67.00,0.24,5.3,1.5,265 2026-05-18 01:00,34.0,19.5,10.7,26,73.00,0.26,7.7,1.5,327 2026-05-18 02:00,34.0,19.5,10.7,26,73.00,0.27,5.6,1.5,304 2026-05-18 03:00,34.0,19.5,10.7,26,74.00,1.15,6.8,1.8,274 2026-05-18 04:00,34.0,19.5,10.7,26,76.00,13.56,4.2,0.8,298 2026-05-18 05:00,34.0,19.5,10.7,26,77.00,50.44,4.7,1.5,227 2026-05-18 06:00,34.0,19.5,10.7,26,73.00,117.60,6.5,1.9,86 2026-05-18 07:00,35.0,19.5,10.7,26,72.00,215.40,9.1,2.5,89 2026-05-18 08:00,36.0,19.5,10.7,26,62.00,296.60,7.4,2.2,144 2026-05-18 09:00,36.0,19.5,10.7,25,62.00,423.40,10.0,2.0,151 2026-05-18 10:00,38.0,19.5,10.7,25,55.00,550.50,10.0,3.2,149 2026-05-18 11:00,39.0,19.5,10.7,25,54.00,490.70,12.3,3.7,182 2026-05-18 12:00,39.0,19.6,10.7,25,52.00,428.90,12.1,3.7,208 2026-05-18 13:00,39.0,19.5,10.6,26,53.00,438.40,14.6,4.2,141 2026-05-18 14:00,39.0,19.5,10.6,25,50.00,430.80,11.8,4.2,141 2026-05-18 15:00,40.0,19.5,10.6,25,51.00,,,,