#------------------------------------------------- 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: 2025-12-04 14:00 to 2025-12-11 13:00 # # 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 # 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 # Precipitation Accumulation Value None Instantaneous N/A Inches N/A PREC Water year accumulated precipitation # Air Temperature Observed Value None Instantaneous N/A Degrees fahrenheit N/A TOBS Instantaneously observed air temperature # Relative Humidity Value None Instantaneous N/A Percent N/A RHUM Relative humidity # Wind Speed Average Value None Hour N/A Miles/hour N/A WSPDV Average wind speed # Wind Speed Maximum Value None Hour N/A Miles/hour N/A WSPDX Maximum wind speed # Wind Direction Average Value None Hour N/A Degrees N/A WDIRV Average wind direction # Solar Radiation Average Value None Hour N/A Watts/meter squared N/A SRADV Average solar radiation # # 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: 2025-12-04 14:00 to 2025-12-11 13:00 # # As of: Dec 11, 2025, 1:50:32 PM GMT-08:00 # Date,Snow Water Equivalent (in),Snow Depth (in),Precipitation Accumulation (in),Air Temperature Observed (degF),Relative Humidity (pct),Wind Speed Average (mph),Wind Speed Maximum (mph),Wind Direction Average (degree),Solar Radiation Average (watt/m2) 2025-12-04 14:00,1.4,6,6.8,32.0,97.00,2.0,6.9,208,11.48 2025-12-04 15:00,1.4,6,6.8,31.0,96.00,1.7,7.6,234,2.46 2025-12-04 16:00,1.4,6,6.9,30.0,97.00,1.1,3.3,298,0.49 2025-12-04 17:00,1.4,7,6.9,29.0,98.00,1.2,2.5,264,0.42 2025-12-04 18:00,1.5,6,6.9,29.0,98.00,0.7,2.2,249,0.37 2025-12-04 19:00,1.5,6,6.9,28.0,98.00,1.8,4.7,257,0.39 2025-12-04 20:00,1.5,7,6.9,28.0,98.00,1.6,4.1,276,0.38 2025-12-04 21:00,1.5,7,6.9,28.0,98.00,0.5,2.9,278,0.31 2025-12-04 22:00,1.5,7,6.9,26.0,96.00,1.4,3.2,268,0.36 2025-12-04 23:00,1.5,7,6.9,26.0,97.00,1.5,4.4,266,0.37 2025-12-05 00:00,1.4,7,6.9,27.0,97.00,2.5,6.4,212,0.43 2025-12-05 01:00,1.5,7,6.9,29.0,95.00,1.8,5.3,184,0.41 2025-12-05 02:00,1.4,8,6.9,27.0,98.00,2.3,4.0,265,0.35 2025-12-05 03:00,1.4,8,6.9,25.0,94.00,2.5,5.2,271,0.40 2025-12-05 04:00,1.5,8,6.9,27.0,95.00,3.5,8.0,282,0.43 2025-12-05 05:00,1.5,8,6.9,26.0,92.00,2.6,5.8,267,0.40 2025-12-05 06:00,1.5,8,6.9,22.0,89.00,3.7,6.2,266,0.37 2025-12-05 07:00,1.4,8,6.9,22.0,89.00,2.2,4.2,268,0.38 2025-12-05 08:00,1.4,8,6.9,21.0,91.00,3.8,6.7,268,0.41 2025-12-05 09:00,1.4,8,6.9,23.0,95.00,3.5,6.2,264,1.02 2025-12-05 10:00,1.4,8,6.9,19.0,87.00,3.3,5.9,259,5.23 2025-12-05 11:00,1.4,8,6.9,18.0,89.00,4.2,7.9,249,12.03 2025-12-05 12:00,1.4,8,6.9,19.0,86.00,4.4,7.0,250,16.75 2025-12-05 13:00,1.4,8,6.9,19.0,88.00,3.0,5.7,258,14.31 2025-12-05 14:00,1.4,8,6.9,15.0,77.00,3.1,5.5,259,7.67 2025-12-05 15:00,1.4,8,6.9,14.0,71.00,4.7,9.4,258,3.09 2025-12-05 16:00,1.4,8,6.9,14.0,66.00,6.9,10.1,257,0.69 2025-12-05 17:00,1.4,8,6.9,17.0,52.00,6.1,10.3,256,0.46 2025-12-05 18:00,1.4,8,6.9,15.0,55.00,5.2,9.5,254,0.38 2025-12-05 19:00,1.4,7,6.9,16.0,50.00,3.8,7.7,252,0.32 2025-12-05 20:00,1.4,7,6.9,17.0,46.00,2.6,6.9,264,0.37 2025-12-05 21:00,1.4,7,6.9,17.0,42.00,2.4,10.9,27,0.36 2025-12-05 22:00,1.4,7,7.0,16.0,39.00,4.7,19.8,79,0.23 2025-12-05 23:00,1.4,8,6.9,17.0,37.00,8.1,15.6,76,0.29 2025-12-06 00:00,1.4,8,6.9,17.0,35.00,7.1,16.1,78,0.10 2025-12-06 01:00,1.4,8,7.0,16.0,35.00,6.6,14.8,77,0.09 2025-12-06 02:00,1.4,8,7.0,16.0,35.00,8.1,20.2,69,0.21 2025-12-06 03:00,1.4,8,7.0,16.0,34.00,8.7,16.7,69,0.16 2025-12-06 04:00,1.4,8,7.0,15.0,34.00,7.9,20.4,63,0.12 2025-12-06 05:00,1.4,8,7.0,16.0,35.00,9.4,19.5,70,0.20 2025-12-06 06:00,1.3,8,6.9,14.0,38.00,9.6,19.7,71,0.25 2025-12-06 07:00,1.4,8,7.0,13.0,39.00,11.0,23.2,65,0.27 2025-12-06 08:00,1.4,8,7.0,13.0,39.00,11.5,23.0,68,0.35 2025-12-06 09:00,1.4,8,6.9,13.0,39.00,12.0,23.7,73,1.31 2025-12-06 10:00,1.3,8,7.0,14.0,38.00,9.8,23.1,82,8.06 2025-12-06 11:00,1.4,8,7.0,14.0,37.00,7.3,19.3,71,22.49 2025-12-06 12:00,1.4,8,7.0,16.0,37.00,6.6,21.8,84,37.41 2025-12-06 13:00,1.4,8,7.0,13.0,37.00,6.0,16.7,94,39.39 2025-12-06 14:00,1.4,8,7.0,15.0,36.00,7.6,16.4,76,18.09 2025-12-06 15:00,1.4,8,7.0,16.0,36.00,5.2,15.0,41,4.51 2025-12-06 16:00,1.4,8,7.0,16.0,36.00,5.3,17.7,10,0.26 2025-12-06 17:00,1.4,8,7.0,16.0,40.00,5.5,12.0,344,0.16 2025-12-06 18:00,1.4,8,7.0,14.0,43.00,4.0,12.3,269,0.17 2025-12-06 19:00,1.4,8,7.0,16.0,43.00,4.7,10.6,10,0.12 2025-12-06 20:00,1.4,8,7.0,18.0,43.00,3.6,10.1,318,0.10 2025-12-06 21:00,1.4,8,7.0,18.0,44.00,3.7,12.1,26,0.06 2025-12-06 22:00,1.4,8,7.0,18.0,44.00,4.9,16.5,40,0.07 2025-12-06 23:00,1.4,8,7.0,19.0,41.00,4.0,10.1,328,0.04 2025-12-07 00:00,1.4,8,6.9,18.0,42.00,4.3,10.9,255,0.11 2025-12-07 01:00,1.4,8,7.0,18.0,44.00,3.2,10.7,20,0.06 2025-12-07 02:00,1.4,8,7.0,18.0,41.00,5.6,12.7,354,0.21 2025-12-07 03:00,1.4,8,7.0,20.0,37.00,3.7,10.6,284,0.03 2025-12-07 04:00,1.4,8,7.0,17.0,43.00,4.3,11.0,293,0.11 2025-12-07 05:00,1.4,8,7.0,21.0,34.00,3.5,12.6,353,0.05 2025-12-07 06:00,1.4,8,7.0,22.0,32.00,5.5,16.7,35,0.12 2025-12-07 07:00,1.4,8,7.0,22.0,31.00,4.3,13.4,39,0.08 2025-12-07 08:00,1.4,8,7.0,22.0,30.00,3.7,11.7,290,0.06 2025-12-07 09:00,1.4,8,7.0,21.0,33.00,3.3,12.3,242,0.99 2025-12-07 10:00,1.4,8,7.0,21.0,32.00,4.6,15.7,93,9.77 2025-12-07 11:00,1.4,8,7.0,22.0,30.00,3.7,15.2,190,18.22 2025-12-07 12:00,1.4,8,7.0,26.0,27.00,5.8,18.3,80,21.17 2025-12-07 13:00,1.4,8,7.0,26.0,26.00,4.4,16.6,49,18.07 2025-12-07 14:00,1.4,8,7.0,23.0,30.00,5.9,17.1,29,13.00 2025-12-07 15:00,1.4,8,7.0,21.0,31.00,5.5,15.8,41,5.03 2025-12-07 16:00,1.4,8,7.0,22.0,31.00,6.9,14.8,50,0.34 2025-12-07 17:00,1.4,8,7.0,21.0,31.00,6.1,15.4,72,0.19 2025-12-07 18:00,1.4,8,7.0,19.0,31.00,8.2,20.3,68,0.19 2025-12-07 19:00,1.4,8,7.0,20.0,29.00,8.6,22.1,82,0.22 2025-12-07 20:00,1.4,8,7.0,19.0,28.00,9.0,20.4,81,0.17 2025-12-07 21:00,1.4,8,7.0,18.0,28.00,12.3,25.3,81,0.24 2025-12-07 22:00,1.4,8,6.9,18.0,22.00,13.8,32.8,74,0.26 2025-12-07 23:00,1.4,8,7.0,18.0,19.00,13.7,35.8,71,0.27 2025-12-08 00:00,1.4,8,6.9,19.0,17.00,15.9,31.5,73,0.63 2025-12-08 01:00,1.4,8,6.9,18.0,15.00,15.8,29.3,93,0.35 2025-12-08 02:00,1.4,7,6.9,18.0,16.00,13.0,30.8,92,0.20 2025-12-08 03:00,1.4,7,6.9,18.0,14.00,13.2,26.1,90,0.24 2025-12-08 04:00,1.4,7,6.9,17.0,16.00,15.8,33.1,95,0.54 2025-12-08 05:00,1.3,7,6.8,17.0,13.00,14.8,28.8,96,0.44 2025-12-08 06:00,1.3,7,6.9,16.0,14.00,9.5,24.7,95,0.18 2025-12-08 07:00,1.3,7,6.8,17.0,13.00,8.5,21.4,103,0.14 2025-12-08 08:00,1.4,7,6.9,17.0,12.00,5.4,21.6,128,0.08 2025-12-08 09:00,1.4,7,6.9,16.0,14.00,5.0,14.0,98,0.83 2025-12-08 10:00,1.3,7,6.9,17.0,14.00,3.8,16.6,128,10.61 2025-12-08 11:00,1.3,7,6.9,18.0,14.00,6.7,17.2,113,20.17 2025-12-08 12:00,1.3,7,6.9,16.0,17.00,3.4,10.3,29,21.81 2025-12-08 13:00,1.4,7,7.0,14.0,22.00,6.8,10.1,252,18.70 2025-12-08 14:00,1.3,7,6.9,14.0,24.00,4.8,9.4,278,13.31 2025-12-08 15:00,1.4,7,6.9,17.0,19.00,4.4,10.2,323,4.90 2025-12-08 16:00,1.3,7,6.9,13.0,26.00,2.8,6.2,263,0.17 2025-12-08 17:00,1.3,7,6.9,9.0,30.00,2.9,6.4,255,0.08 2025-12-08 18:00,1.3,7,6.9,8.0,33.00,3.1,5.3,260,0.06 2025-12-08 19:00,1.3,7,6.9,8.0,33.00,3.2,5.3,254,0.05 2025-12-08 20:00,1.3,7,6.8,8.0,31.00,3.1,5.8,257,0.07 2025-12-08 21:00,1.3,7,6.8,9.0,32.00,2.4,5.3,255,0.08 2025-12-08 22:00,1.3,7,6.8,12.0,25.00,3.5,8.9,263,0.03 2025-12-08 23:00,1.3,7,6.8,17.0,19.00,4.2,11.3,320,0.06 2025-12-09 00:00,1.4,7,6.9,16.0,18.00,1.9,6.4,248,0.03 2025-12-09 01:00,1.3,7,6.9,14.0,18.00,2.6,8.7,310,0.07 2025-12-09 02:00,1.3,7,6.9,21.0,9.00,3.7,10.9,325,0.05 2025-12-09 03:00,1.3,7,6.9,21.0,9.00,3.0,8.8,326,0.06 2025-12-09 04:00,1.3,7,7.0,20.0,12.00,6.0,9.9,265,0.08 2025-12-09 05:00,1.3,7,7.0,16.0,19.00,6.2,10.4,258,0.09 2025-12-09 06:00,1.3,7,7.0,16.0,22.00,3.7,7.9,257,0.05 2025-12-09 07:00,1.3,7,6.9,14.0,22.00,4.0,7.8,254,0.08 2025-12-09 08:00,1.3,7,6.9,15.0,23.00,4.1,7.6,266,0.05 2025-12-09 09:00,1.3,7,6.9,16.0,19.00,3.0,7.4,266,0.91 2025-12-09 10:00,1.3,7,6.9,14.0,24.00,2.8,6.1,258,9.70 2025-12-09 11:00,1.3,7,6.9,15.0,23.00,3.2,5.8,260,22.71 2025-12-09 12:00,1.3,7,6.9,14.0,28.00,3.2,6.2,258,33.79 2025-12-09 13:00,1.3,7,6.9,13.0,31.00,3.3,6.6,249,34.23 2025-12-09 14:00,1.3,7,6.9,15.0,24.00,3.0,6.2,252,22.61 2025-12-09 15:00,1.3,7,6.9,13.0,32.00,2.4,4.6,249,5.85 2025-12-09 16:00,1.3,7,6.9,16.0,19.00,3.6,6.7,262,0.26 2025-12-09 17:00,1.3,7,6.9,12.0,30.00,4.7,6.8,259,0.08 2025-12-09 18:00,1.3,7,6.9,12.0,29.00,3.9,5.8,259,0.11 2025-12-09 19:00,1.3,7,6.9,12.0,33.00,3.4,4.8,264,0.11 2025-12-09 20:00,1.3,7,6.9,10.0,35.00,3.0,5.6,268,0.08 2025-12-09 21:00,1.3,7,6.9,6.0,39.00,4.2,6.8,261,0.10 2025-12-09 22:00,1.3,7,6.8,8.0,37.00,3.5,6.0,259,0.06 2025-12-09 23:00,1.3,7,6.8,8.0,36.00,3.0,5.8,261,0.05 2025-12-10 00:00,1.3,7,6.8,7.0,40.00,4.4,6.1,258,0.10 2025-12-10 01:00,1.3,7,6.8,11.0,33.00,3.0,6.3,260,0.06 2025-12-10 02:00,1.3,7,6.8,8.0,39.00,3.5,5.5,258,0.10 2025-12-10 03:00,1.3,7,6.8,9.0,36.00,3.3,5.6,261,0.01 2025-12-10 04:00,1.3,7,6.8,8.0,37.00,4.0,6.3,262,0.06 2025-12-10 05:00,1.3,7,6.8,8.0,38.00,4.1,6.9,258,0.05 2025-12-10 06:00,1.3,7,6.8,7.0,38.00,3.2,7.1,253,0.13 2025-12-10 07:00,1.3,7,6.8,8.0,37.00,2.2,6.3,247,0.07 2025-12-10 08:00,1.3,7,6.8,10.0,31.00,2.3,4.7,256,0.05 2025-12-10 09:00,1.3,7,6.8,7.0,38.00,2.6,6.4,261,0.80 2025-12-10 10:00,1.3,7,6.8,9.0,31.00,3.0,7.2,251,8.05 2025-12-10 11:00,1.3,6,6.8,12.0,26.00,5.1,9.1,254,20.97 2025-12-10 12:00,1.3,7,6.8,14.0,22.00,8.0,11.8,255,24.31 2025-12-10 13:00,1.3,7,6.9,13.0,24.00,7.6,10.8,262,24.22 2025-12-10 14:00,1.3,7,6.9,15.0,23.00,5.9,9.5,263,18.07 2025-12-10 15:00,1.3,7,6.9,15.0,21.00,6.2,9.7,266,5.29 2025-12-10 16:00,1.3,7,7.0,14.0,24.00,5.5,9.1,257,0.23 2025-12-10 17:00,1.3,7,6.9,17.0,21.00,4.0,9.2,254,0.06 2025-12-10 18:00,1.3,7,6.9,14.0,24.00,4.6,8.0,252,0.07 2025-12-10 19:00,1.3,7,6.9,13.0,24.00,4.1,7.0,254,0.03 2025-12-10 20:00,1.3,7,6.8,13.0,25.00,3.3,8.6,249,0.04 2025-12-10 21:00,1.3,7,6.8,10.0,28.00,4.6,7.0,259,0.03 2025-12-10 22:00,1.3,7,6.8,12.0,28.00,4.2,8.8,256,0.05 2025-12-10 23:00,1.3,7,6.8,11.0,32.00,6.6,9.9,254,0.15 2025-12-11 00:00,1.3,7,6.8,11.0,31.00,4.1,8.6,272,0.05 2025-12-11 01:00,1.3,7,6.8,10.0,30.00,4.5,7.0,253,0.04 2025-12-11 02:00,1.3,7,6.9,11.0,32.00,5.0,9.6,259,0.02 2025-12-11 03:00,1.3,7,7.0,11.0,30.00,3.7,6.2,259,0.03 2025-12-11 04:00,1.3,7,7.0,9.0,35.00,4.6,7.7,258,0.04 2025-12-11 05:00,1.3,7,6.9,9.0,35.00,4.2,6.6,252,0.05 2025-12-11 06:00,1.3,7,6.9,9.0,34.00,4.3,6.4,255,0.04 2025-12-11 07:00,1.3,7,7.0,9.0,32.00,4.1,6.8,251,0.05 2025-12-11 08:00,1.3,7,6.9,13.0,28.00,4.4,9.5,245,0.04 2025-12-11 09:00,1.3,7,7.0,15.0,25.00,4.8,8.1,245,0.75 2025-12-11 10:00,1.3,7,7.0,11.0,30.00,3.4,7.3,256,9.31 2025-12-11 11:00,1.3,7,7.0,12.0,28.00,4.4,7.6,256,18.25 2025-12-11 12:00,1.3,7,7.0,13.0,28.00,,,,