#------------------------------------------------- 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: 2025-06-30 16:00 to 2025-07-07 15:00 # # 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: 2025-06-30 16:00 to 2025-07-07 15:00 # # As of: Jul 7, 2025, 3:18:46 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) 2025-06-30 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,,0,22.8,53.0,77.00,1.5,3.4,32,15.98 2025-07-02 21:00,0.0,0,22.9,49.0,88.00,5.7,17.1,356,5.46 2025-07-02 22:00,0.0,0,23.1,49.0,92.00,1.2,3.9,260,2.85 2025-07-02 23:00,0.0,0,23.1,48.0,90.00,1.8,9.1,211,0.59 2025-07-03 00:00,0.0,,23.1,48.0,83.00,1.7,4.9,262,0.45 2025-07-03 01:00,0.0,0,23.0,46.0,88.00,1.4,3.5,42,0.43 2025-07-03 02:00,0.0,,23.0,45.0,90.00,2.0,4.4,125,0.73 2025-07-03 03:00,0.1,0,23.1,44.0,98.00,1.3,3.9,278,3.74 2025-07-03 04:00,0.1,0,23.1,45.0,95.00,3.0,6.5,280,5.14 2025-07-03 05:00,0.1,,23.1,46.0,89.00,1.5,3.7,112,58.57 2025-07-03 06:00,0.0,0,23.1,47.0,88.00,1.3,3.5,116,87.90 2025-07-03 07:00,0.0,0,23.1,47.0,90.00,2.4,6.8,155,103.30 2025-07-03 08:00,0.0,0,23.1,47.0,82.00,2.8,7.5,222,159.50 2025-07-03 09:00,0.0,0,23.1,47.0,75.00,2.2,6.7,77,244.50 2025-07-03 10:00,0.0,,23.1,48.0,74.00,1.9,6.3,57,309.00 2025-07-03 11:00,0.0,0,23.1,50.0,69.00,3.1,6.6,97,395.00 2025-07-03 12:00,0.0,0,23.1,51.0,65.00,3.8,8.5,115,635.90 2025-07-03 13:00,0.0,0,23.1,53.0,64.00,3.1,8.6,109,640.30 2025-07-03 14:00,,0,23.0,55.0,65.00,2.7,7.9,144,275.30 2025-07-03 15:00,0.0,,23.1,55.0,68.00,1.9,7.0,215,267.60 2025-07-03 16:00,0.0,0,23.1,55.0,68.00,2.0,8.3,143,216.80 2025-07-03 17:00,0.0,0,23.1,56.0,71.00,3.1,6.8,180,339.60 2025-07-03 18:00,0.0,0,23.1,58.0,64.00,2.8,7.1,254,316.80 2025-07-03 19:00,,0,23.1,56.0,72.00,2.2,6.2,270,73.55 2025-07-03 20:00,0.0,,23.1,50.0,82.00,1.9,5.2,261,28.74 2025-07-03 21:00,0.0,,23.1,48.0,83.00,2.5,6.8,249,16.94 2025-07-03 22:00,0.0,0,23.1,46.0,87.00,3.0,5.1,249,4.86 2025-07-03 23:00,0.0,,23.0,45.0,86.00,3.3,6.7,249,0.55 2025-07-04 00:00,0.0,0,23.0,45.0,84.00,3.6,7.0,249,0.09 2025-07-04 01:00,0.0,0,23.1,45.0,89.00,2.7,7.1,246,0.11 2025-07-04 02:00,0.0,,23.1,43.0,90.00,3.4,5.8,251,0.51 2025-07-04 03:00,0.0,0,23.1,43.0,92.00,3.1,4.9,257,5.10 2025-07-04 04:00,0.0,0,23.1,45.0,91.00,2.0,3.9,265,54.89 2025-07-04 05:00,0.0,,23.1,46.0,87.00,1.2,3.7,27,159.10 2025-07-04 06:00,0.0,,23.1,50.0,80.00,2.2,4.1,85,286.90 2025-07-04 07:00,0.0,,23.1,49.0,81.00,2.8,6.9,94,381.70 2025-07-04 08:00,0.0,0,23.1,50.0,81.00,4.6,9.9,117,486.90 2025-07-04 09:00,,0,23.0,51.0,77.00,6.0,10.9,117,612.30 2025-07-04 10:00,,0,23.0,53.0,77.00,6.5,11.9,115,689.40 2025-07-04 11:00,,0,22.9,55.0,73.00,6.8,13.2,107,745.40 2025-07-04 12:00,,,22.8,56.0,71.00,7.0,14.0,115,569.40 2025-07-04 13:00,,,23.0,58.0,68.00,7.4,13.5,113,722.50 2025-07-04 14:00,,,23.0,59.0,68.00,7.9,16.8,109,340.00 2025-07-04 15:00,,0,23.0,59.0,69.00,7.0,13.5,112,679.70 2025-07-04 16:00,,0,23.0,61.0,69.00,6.9,13.5,109,396.20 2025-07-04 17:00,,0,23.1,59.0,70.00,5.1,10.6,114,366.90 2025-07-04 18:00,,0,23.1,58.0,72.00,3.3,8.1,93,283.60 2025-07-04 19:00,,0,23.1,57.0,76.00,1.9,5.1,341,81.70 2025-07-04 20:00,,0,23.1,53.0,86.00,3.5,5.6,256,30.83 2025-07-04 21:00,,,23.2,50.0,88.00,3.4,5.8,262,19.88 2025-07-04 22:00,,0,23.2,50.0,86.00,4.1,6.2,255,5.41 2025-07-04 23:00,,0,23.2,48.0,89.00,4.4,7.1,259,0.38 2025-07-05 00:00,,0,23.2,49.0,88.00,3.8,6.4,257,0.12 2025-07-05 01:00,0.0,0,23.2,48.0,88.00,2.9,5.8,255,0.17 2025-07-05 02:00,0.0,,23.1,46.0,90.00,2.3,4.8,245,0.41 2025-07-05 03:00,0.0,0,23.1,45.0,92.00,3.5,6.1,256,4.50 2025-07-05 04:00,0.0,0,23.1,44.0,92.00,2.5,4.9,250,29.55 2025-07-05 05:00,0.0,0,23.1,47.0,91.00,2.0,4.1,73,58.08 2025-07-05 06:00,0.0,0,23.1,46.0,94.00,1.4,3.8,100,133.10 2025-07-05 07:00,0.0,0,23.1,46.0,94.00,2.1,4.8,96,192.50 2025-07-05 08:00,0.0,0,23.1,47.0,94.00,3.6,6.7,108,181.20 2025-07-05 09:00,0.0,0,23.2,47.0,92.00,2.1,5.9,112,185.90 2025-07-05 10:00,0.0,0,23.2,49.0,91.00,2.6,6.5,104,289.50 2025-07-05 11:00,,0,23.1,51.0,86.00,3.7,10.4,112,463.10 2025-07-05 12:00,,,23.1,53.0,81.00,4.8,10.1,120,563.40 2025-07-05 13:00,,0,23.0,55.0,79.00,6.5,12.9,123,405.30 2025-07-05 14:00,,0,23.1,56.0,74.00,4.6,10.2,155,309.80 2025-07-05 15:00,,,23.1,56.0,79.00,3.8,9.3,196,247.90 2025-07-05 16:00,,,23.1,55.0,74.00,4.4,9.2,111,129.10 2025-07-05 17:00,,,23.1,53.0,71.00,3.6,8.3,144,37.13 2025-07-05 18:00,0.0,0,23.2,49.0,88.00,1.8,5.1,15,24.90 2025-07-05 19:00,0.1,,23.3,48.0,90.00,1.5,4.3,162,23.96 2025-07-05 20:00,0.1,0,23.4,48.0,93.00,2.6,7.6,239,11.71 2025-07-05 21:00,0.1,0,23.4,48.0,82.00,2.6,10.0,236,4.32 2025-07-05 22:00,0.1,0,23.5,47.0,83.00,2.8,8.3,227,2.12 2025-07-05 23:00,0.1,0,23.6,47.0,83.00,2.6,8.4,242,0.44 2025-07-06 00:00,0.1,,23.6,47.0,75.00,2.4,5.8,240,0.42 2025-07-06 01:00,0.1,0,23.6,45.0,83.00,1.8,5.3,240,0.46 2025-07-06 02:00,0.1,0,23.7,45.0,85.00,2.4,5.6,259,0.51 2025-07-06 03:00,0.1,,23.8,43.0,93.00,4.6,6.6,271,2.11 2025-07-06 04:00,0.1,,23.9,44.0,91.00,4.8,7.4,266,5.53 2025-07-06 05:00,0.1,,23.9,45.0,88.00,4.7,8.0,275,27.99 2025-07-06 06:00,0.1,0,23.9,47.0,80.00,2.2,5.9,267,76.61 2025-07-06 07:00,0.1,0,23.9,48.0,84.00,1.6,3.6,163,144.90 2025-07-06 08:00,0.1,,23.9,50.0,76.00,0.6,3.8,86,189.50 2025-07-06 09:00,0.0,0,24.0,52.0,78.00,2.6,5.2,86,272.30 2025-07-06 10:00,0.0,,24.0,52.0,69.00,3.2,9.2,105,556.80 2025-07-06 11:00,0.0,0,23.9,54.0,76.00,5.1,12.2,118,700.60 2025-07-06 12:00,0.0,,23.9,55.0,70.00,6.0,10.8,121,480.20 2025-07-06 13:00,0.0,0,23.9,55.0,71.00,3.6,9.2,123,324.50 2025-07-06 14:00,0.0,,23.9,56.0,68.00,3.5,9.3,109,297.40 2025-07-06 15:00,0.0,0,23.9,57.0,66.00,4.3,12.8,156,512.50 2025-07-06 16:00,0.0,0,23.9,55.0,64.00,2.7,8.6,116,131.90 2025-07-06 17:00,0.0,,24.0,51.0,79.00,3.8,10.3,291,60.39 2025-07-06 18:00,0.0,,24.1,50.0,78.00,3.8,8.7,345,91.10 2025-07-06 19:00,0.1,0,24.1,50.0,88.00,3.2,7.5,295,53.86 2025-07-06 20:00,0.0,,24.1,50.0,82.00,3.3,6.2,272,39.14 2025-07-06 21:00,0.0,0,24.1,49.0,85.00,3.5,8.4,257,24.60 2025-07-06 22:00,0.0,0,24.1,49.0,72.00,2.7,8.3,233,3.94 2025-07-06 23:00,0.0,,24.1,46.0,80.00,5.1,7.4,257,0.64 2025-07-07 00:00,0.0,0,24.1,47.0,79.00,4.2,7.5,251,0.40 2025-07-07 01:00,0.0,,24.1,46.0,82.00,3.6,7.8,255,0.30 2025-07-07 02:00,0.0,0,24.1,46.0,81.00,2.8,6.1,256,0.42 2025-07-07 03:00,0.1,,24.1,47.0,76.00,1.9,4.5,260,1.23 2025-07-07 04:00,0.1,,24.1,44.0,91.00,3.4,5.4,249,6.16 2025-07-07 05:00,0.1,,24.1,45.0,87.00,2.5,4.6,200,23.64 2025-07-07 06:00,0.1,0,24.1,45.0,91.00,1.2,6.4,192,41.41 2025-07-07 07:00,0.1,0,24.2,45.0,92.00,4.2,8.7,147,47.04 2025-07-07 08:00,0.1,,24.2,42.0,98.00,4.6,8.7,126,132.10 2025-07-07 09:00,0.1,0,24.2,44.0,98.00,3.3,9.2,93,156.10 2025-07-07 10:00,0.1,0,24.2,44.0,98.00,3.6,9.1,104,170.20 2025-07-07 11:00,0.1,0,24.2,45.0,92.00,3.4,10.4,220,185.90 2025-07-07 12:00,0.1,0,24.2,44.0,96.00,5.4,9.3,105,186.80 2025-07-07 13:00,0.1,,24.2,44.0,99.00,3.6,7.5,114,133.30 2025-07-07 14:00,0.1,0,24.3,44.0,99.00,,,,