#------------------------------------------------- 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: 2025-06-25 22:00 to 2025-07-02 21:00 # # 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: 2025-06-25 22:00 to 2025-07-02 21:00 # # As of: Jul 2, 2025, 9:24:16 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) 2025-06-25 22:00,0.1,0,22.7,43.0,90.00,2.2,4.9,261,2.40 2025-06-25 23:00,0.1,0,22.7,43.0,90.00,4.4,7.3,254,0.52 2025-06-26 00:00,0.0,0,22.7,43.0,89.00,4.3,8.2,258,0.38 2025-06-26 01:00,0.1,0,22.7,42.0,87.00,3.9,7.5,260,0.47 2025-06-26 02:00,0.1,0,22.6,42.0,84.00,3.8,6.9,258,0.77 2025-06-26 03:00,0.1,0,22.6,41.0,85.00,4.2,6.8,261,5.95 2025-06-26 04:00,0.1,0,22.6,41.0,84.00,4.0,6.4,250,34.39 2025-06-26 05:00,0.1,0,22.6,41.0,82.00,3.2,5.0,270,74.63 2025-06-26 06:00,0.1,0,22.6,43.0,84.00,1.6,3.7,246,221.50 2025-06-26 07:00,0.1,0,22.6,47.0,74.00,2.7,7.1,96,383.40 2025-06-26 08:00,0.0,,22.6,48.0,72.00,4.7,9.4,116,437.40 2025-06-26 09:00,0.0,0,22.5,48.0,76.00,5.1,10.0,124,598.10 2025-06-26 10:00,0.0,0,22.6,50.0,71.00,4.3,11.0,114,730.10 2025-06-26 11:00,0.0,0,22.5,51.0,57.00,3.3,10.3,115,813.00 2025-06-26 12:00,0.0,0,22.5,54.0,53.00,3.7,10.9,122,614.80 2025-06-26 13:00,0.0,0,22.5,55.0,51.00,4.5,13.1,168,765.10 2025-06-26 14:00,,0,22.5,54.0,52.00,5.2,13.0,117,368.10 2025-06-26 15:00,,0,22.5,53.0,54.00,4.5,14.8,105,573.30 2025-06-26 16:00,,0,22.5,53.0,58.00,3.4,11.8,136,310.10 2025-06-26 17:00,,0,22.6,52.0,58.00,4.0,10.7,137,463.70 2025-06-26 18:00,,,22.6,52.0,58.00,2.6,10.5,149,398.80 2025-06-26 19:00,,0,22.6,51.0,60.00,2.5,6.8,178,135.90 2025-06-26 20:00,,0,22.6,48.0,65.00,2.0,5.7,210,80.00 2025-06-26 21:00,0.0,0,22.6,47.0,73.00,1.9,4.0,235,44.27 2025-06-26 22:00,0.0,0,22.7,44.0,81.00,3.2,5.0,244,7.84 2025-06-26 23:00,0.0,0,22.7,42.0,85.00,4.1,6.1,250,0.81 2025-06-27 00:00,0.0,0,22.7,43.0,86.00,3.2,4.7,251,0.26 2025-06-27 01:00,0.0,0,22.6,42.0,85.00,3.9,5.7,264,0.20 2025-06-27 02:00,0.0,0,22.6,42.0,84.00,3.2,4.7,253,0.73 2025-06-27 03:00,0.0,0,22.6,41.0,83.00,4.4,6.6,247,6.14 2025-06-27 04:00,0.0,0,22.6,43.0,84.00,2.4,4.2,248,20.81 2025-06-27 05:00,0.0,0,22.6,44.0,81.00,1.6,3.5,247,82.70 2025-06-27 06:00,0.0,0,22.6,46.0,78.00,1.5,6.7,67,167.10 2025-06-27 07:00,0.0,0,22.6,47.0,69.00,3.5,7.2,106,339.10 2025-06-27 08:00,0.0,0,22.6,49.0,70.00,4.3,8.9,110,338.60 2025-06-27 09:00,0.0,0,22.6,48.0,71.00,4.4,8.9,121,413.30 2025-06-27 10:00,0.0,0,22.6,50.0,69.00,4.9,10.0,114,565.00 2025-06-27 11:00,,0,22.6,51.0,70.00,6.2,12.5,112,555.50 2025-06-27 12:00,,0,22.5,52.0,66.00,7.4,13.4,108,491.80 2025-06-27 13:00,,0,22.5,53.0,73.00,3.9,11.6,213,318.50 2025-06-27 14:00,,1,22.6,52.0,76.00,3.5,10.5,149,214.90 2025-06-27 15:00,0.0,1,22.6,51.0,78.00,3.6,10.5,149,396.40 2025-06-27 16:00,,1,22.6,53.0,68.00,3.8,10.5,142,258.90 2025-06-27 17:00,0.0,1,22.6,50.0,72.00,2.0,5.6,76,122.80 2025-06-27 18:00,0.0,2,22.6,50.0,76.00,2.7,6.7,15,57.34 2025-06-27 19:00,0.0,0,22.6,49.0,76.00,1.7,5.1,8,31.50 2025-06-27 20:00,0.0,0,22.7,49.0,81.00,2.1,4.7,256,12.31 2025-06-27 21:00,0.0,0,22.7,47.0,87.00,2.2,3.9,259,6.54 2025-06-27 22:00,0.0,0,22.7,46.0,86.00,2.9,5.1,246,2.66 2025-06-27 23:00,0.0,0,22.7,45.0,86.00,3.6,5.3,247,0.52 2025-06-28 00:00,0.0,0,22.7,44.0,87.00,3.0,4.4,249,0.37 2025-06-28 01:00,0.0,0,22.6,45.0,86.00,2.4,6.7,277,0.23 2025-06-28 02:00,0.0,0,22.6,44.0,87.00,2.1,4.3,268,0.56 2025-06-28 03:00,0.0,1,22.6,45.0,88.00,3.0,5.1,257,4.14 2025-06-28 04:00,0.0,0,22.6,46.0,86.00,1.6,5.8,215,15.50 2025-06-28 05:00,0.0,0,22.6,46.0,90.00,1.2,3.0,237,56.98 2025-06-28 06:00,0.0,0,22.6,47.0,87.00,1.8,4.6,163,89.70 2025-06-28 07:00,0.0,0,22.6,48.0,87.00,2.2,4.5,117,142.10 2025-06-28 08:00,0.0,0,22.6,49.0,88.00,3.4,8.2,124,311.70 2025-06-28 09:00,0.0,0,22.6,50.0,81.00,4.9,9.2,114,628.20 2025-06-28 10:00,0.0,0,22.6,52.0,78.00,5.2,12.5,109,715.40 2025-06-28 11:00,,0,22.5,54.0,77.00,5.6,12.9,120,652.90 2025-06-28 12:00,,0,22.5,54.0,70.00,4.8,20.5,274,316.90 2025-06-28 13:00,,0,22.5,50.0,81.00,1.6,6.0,65,104.60 2025-06-28 14:00,0.1,1,22.8,50.0,93.00,1.9,5.0,117,185.20 2025-06-28 15:00,0.1,1,22.8,51.0,94.00,2.6,5.4,98,233.90 2025-06-28 16:00,0.0,0,22.8,51.0,88.00,1.2,3.8,108,142.20 2025-06-28 17:00,0.0,1,22.8,51.0,85.00,1.1,2.9,104,149.50 2025-06-28 18:00,0.0,1,22.8,51.0,84.00,1.1,3.0,122,74.37 2025-06-28 19:00,0.0,1,22.8,51.0,82.00,1.6,3.9,251,41.02 2025-06-28 20:00,0.0,0,22.8,50.0,85.00,2.6,4.8,254,27.57 2025-06-28 21:00,0.0,1,22.8,49.0,87.00,3.0,4.5,254,14.36 2025-06-28 22:00,0.0,0,22.9,48.0,88.00,2.5,4.5,249,2.80 2025-06-28 23:00,0.0,1,22.8,48.0,88.00,2.1,4.2,248,0.55 2025-06-29 00:00,0.0,0,22.8,48.0,88.00,3.1,9.9,247,0.30 2025-06-29 01:00,0.0,1,22.8,47.0,96.00,1.6,4.3,264,0.34 2025-06-29 02:00,0.0,0,22.8,46.0,95.00,1.5,4.7,217,0.52 2025-06-29 03:00,0.0,0,22.8,46.0,92.00,2.5,4.0,254,2.54 2025-06-29 04:00,0.1,1,22.8,46.0,92.00,1.6,3.6,248,16.16 2025-06-29 05:00,0.0,0,22.8,45.0,92.00,1.0,2.7,264,33.56 2025-06-29 06:00,0.0,0,22.8,46.0,97.00,1.1,4.8,84,107.00 2025-06-29 07:00,0.0,0,22.8,47.0,98.00,2.5,7.1,96,196.10 2025-06-29 08:00,0.0,0,22.8,47.0,97.00,3.5,6.1,117,202.20 2025-06-29 09:00,0.0,0,22.8,47.0,98.00,4.1,7.2,118,189.00 2025-06-29 10:00,0.0,0,22.8,48.0,95.00,3.2,7.8,110,226.10 2025-06-29 11:00,0.0,0,22.8,49.0,94.00,4.9,8.2,117,191.90 2025-06-29 12:00,0.0,1,22.9,49.0,94.00,5.3,9.5,115,266.10 2025-06-29 13:00,0.0,1,22.9,51.0,92.00,6.9,12.4,114,419.40 2025-06-29 14:00,0.0,0,22.7,51.0,93.00,6.2,10.9,110,229.30 2025-06-29 15:00,0.0,0,22.8,51.0,90.00,5.8,10.4,121,366.60 2025-06-29 16:00,0.0,0,22.8,52.0,89.00,5.6,9.9,124,200.20 2025-06-29 17:00,0.0,1,22.8,52.0,88.00,5.5,11.7,153,159.80 2025-06-29 18:00,0.0,0,22.8,50.0,91.00,4.6,8.3,110,93.30 2025-06-29 19:00,0.0,0,22.8,49.0,89.00,3.4,11.6,143,77.13 2025-06-29 20:00,0.0,0,22.8,50.0,79.00,2.4,7.4,132,52.30 2025-06-29 21:00,0.0,0,22.8,49.0,79.00,2.0,4.4,255,13.22 2025-06-29 22:00,0.0,0,22.8,48.0,84.00,2.6,5.5,258,5.42 2025-06-29 23:00,0.0,1,22.8,47.0,82.00,2.2,5.0,256,0.64 2025-06-30 00:00,0.0,0,22.8,47.0,88.00,2.7,4.1,255,0.38 2025-06-30 01:00,0.0,,22.8,47.0,87.00,2.6,4.6,251,0.32 2025-06-30 02:00,0.0,0,22.8,47.0,88.00,1.6,3.7,257,0.34 2025-06-30 03:00,0.0,0,22.8,46.0,94.00,1.9,3.4,246,1.47 2025-06-30 04:00,0.0,0,22.8,45.0,97.00,2.1,5.5,199,11.24 2025-06-30 05:00,0.0,0,22.8,46.0,95.00,7.0,11.7,302,29.78 2025-06-30 06:00,0.0,0,22.8,47.0,90.00,6.3,12.6,302,104.60 2025-06-30 07:00,0.0,0,22.8,47.0,93.00,3.2,7.5,96,158.60 2025-06-30 08:00,0.0,0,22.8,47.0,98.00,2.5,5.1,107,136.50 2025-06-30 09:00,0.0,0,22.8,48.0,97.00,3.1,6.6,110,165.40 2025-06-30 10:00,0.0,,22.8,47.0,98.00,3.3,6.8,96,142.20 2025-06-30 11:00,0.0,,22.9,47.0,99.00,2.9,7.9,114,146.10 2025-06-30 12:00,0.0,0,22.9,47.0,99.00,4.5,7.2,116,146.00 2025-06-30 13:00,0.0,0,22.9,47.0,99.00,4.0,7.8,123,145.40 2025-06-30 14:00,0.0,0,22.9,47.0,99.00,2.6,7.0,88,133.60 2025-06-30 15:00,0.0,0,22.9,49.0,99.00,4.1,6.6,111,130.60 2025-06-30 16:00,0.0,0,22.9,49.0,99.00,4.5,7.5,113,91.30 2025-06-30 17:00,0.0,1,22.9,48.0,99.00,2.8,6.3,104,57.65 2025-06-30 18:00,0.0,0,22.9,49.0,99.00,1.9,4.5,91,54.69 2025-06-30 19:00,0.0,0,22.9,48.0,99.00,1.2,2.9,74,33.89 2025-06-30 20:00,0.0,1,22.9,48.0,99.00,1.5,4.6,123,17.11 2025-06-30 21:00,0.0,0,22.9,48.0,99.00,2.0,4.8,101,4.89 2025-06-30 22:00,0.0,0,22.8,47.0,99.00,1.9,4.2,251,1.79 2025-06-30 23:00,0.0,0,22.8,47.0,96.00,1.7,4.8,294,0.42 2025-07-01 00:00,0.0,0,22.8,47.0,91.00,4.0,7.4,267,0.17 2025-07-01 01:00,0.0,0,22.8,45.0,89.00,4.0,7.8,251,0.39 2025-07-01 02:00,0.0,0,22.8,47.0,84.00,2.3,4.8,252,1.15 2025-07-01 03:00,0.0,0,22.8,46.0,89.00,3.2,6.0,246,8.80 2025-07-01 04:00,0.0,0,22.8,43.0,90.00,3.4,5.1,247,53.43 2025-07-01 05:00,0.0,0,22.8,45.0,95.00,2.0,5.0,273,156.10 2025-07-01 06:00,0.0,0,22.8,48.0,92.00,1.3,4.4,94,176.90 2025-07-01 07:00,0.0,,22.8,49.0,89.00,2.2,7.5,100,252.70 2025-07-01 08:00,0.0,0,22.8,50.0,92.00,3.1,8.4,96,417.00 2025-07-01 09:00,0.0,0,22.8,51.0,89.00,5.4,9.4,115,612.50 2025-07-01 10:00,0.0,0,22.8,53.0,85.00,6.1,12.2,116,683.50 2025-07-01 11:00,,0,22.7,54.0,82.00,6.4,12.8,120,786.30 2025-07-01 12:00,,,22.7,55.0,76.00,6.1,13.2,121,591.30 2025-07-01 13:00,,,22.7,57.0,72.00,5.9,13.2,120,752.60 2025-07-01 14:00,,0,22.7,58.0,65.00,4.5,11.9,133,342.30 2025-07-01 15:00,,0,22.7,58.0,66.00,4.5,12.2,133,707.20 2025-07-01 16:00,,0,22.7,59.0,64.00,3.8,15.9,139,479.00 2025-07-01 17:00,,0,22.7,57.0,67.00,2.4,7.4,192,179.50 2025-07-01 18:00,,0,22.8,56.0,68.00,4.6,10.5,162,364.90 2025-07-01 19:00,,0,22.8,54.0,67.00,3.7,10.0,178,89.60 2025-07-01 20:00,,0,22.8,49.0,82.00,2.2,6.2,285,46.99 2025-07-01 21:00,,0,22.8,50.0,78.00,2.2,6.7,84,17.64 2025-07-01 22:00,0.0,0,22.9,48.0,76.00,3.8,6.9,239,5.52 2025-07-01 23:00,,0,22.8,43.0,85.00,3.6,6.1,251,0.63 2025-07-02 00:00,0.0,,22.8,43.0,89.00,4.7,6.9,252,0.08 2025-07-02 01:00,0.0,0,22.8,42.0,90.00,4.2,6.6,251,0.13 2025-07-02 02:00,0.0,,22.8,43.0,90.00,3.0,5.6,249,0.68 2025-07-02 03:00,0.0,0,22.8,44.0,87.00,2.6,4.3,255,4.88 2025-07-02 04:00,0.0,,22.8,43.0,87.00,2.3,4.0,257,22.08 2025-07-02 05:00,0.0,0,22.8,44.0,84.00,2.5,4.9,310,123.90 2025-07-02 06:00,0.0,,22.8,49.0,80.00,2.4,4.9,73,266.30 2025-07-02 07:00,0.0,0,22.8,50.0,76.00,4.2,9.9,89,373.10 2025-07-02 08:00,0.0,0,22.8,50.0,65.00,5.1,10.3,115,394.80 2025-07-02 09:00,,0,22.8,50.0,69.00,4.9,10.5,116,608.50 2025-07-02 10:00,,0,22.7,52.0,67.00,4.9,9.3,120,621.10 2025-07-02 11:00,,0,22.7,53.0,67.00,6.1,11.7,115,723.30 2025-07-02 12:00,,0,22.7,55.0,67.00,6.8,14.3,114,612.00 2025-07-02 13:00,,0,22.7,57.0,65.00,5.7,13.5,195,757.60 2025-07-02 14:00,,0,22.7,59.0,64.00,5.4,12.6,222,427.50 2025-07-02 15:00,,0,22.7,60.0,66.00,6.4,12.0,237,609.00 2025-07-02 16:00,,0,22.7,59.0,65.00,5.5,10.1,247,401.70 2025-07-02 17:00,,0,22.7,59.0,66.00,3.8,14.1,218,434.80 2025-07-02 18:00,,0,22.7,59.0,66.00,3.2,11.1,176,299.60 2025-07-02 19:00,,0,22.8,58.0,66.00,2.4,7.9,37,108.80 2025-07-02 20:00,,0,22.8,53.0,77.00,,,,