#------------------------------------------------- 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: 2025-07-11 18:00 to 2025-07-14 17:00 # # Data for the following site(s) are contained in this file: # # SNOTEL 952: Upper Chena, 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 # # 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 # #------------------------------------------------------------------------------------------------------ # # Upper Chena (952) # Alaska SNOTEL Site - 2790 ft # Reporting Frequency: Hourly; Date Range: 2025-07-11 18:00 to 2025-07-14 17:00 # # As of: Jul 14, 2025, 5:52:38 PM GMT-08:00 # Date,Air Temperature Observed (degF),Precipitation Accumulation (in),Snow Water Equivalent (in),Snow Depth (in),Solar Radiation Average (watt/m2) 2025-07-11 18:00,66.0,,0.0,0,229.20 2025-07-11 19:00,63.0,,0.0,0,53.56 2025-07-11 20:00,54.0,,0.0,0,41.84 2025-07-11 21:00,54.0,,0.0,0,24.02 2025-07-11 22:00,53.0,,0.0,0,9.37 2025-07-11 23:00,51.0,,0.0,0,1.22 2025-07-12 00:00,47.0,,0.0,0,0.12 2025-07-12 01:00,44.0,,0.0,0,0.69 2025-07-12 02:00,44.0,,0.0,0,2.89 2025-07-12 03:00,43.0,,0.0,0,8.80 2025-07-12 04:00,43.0,,0.0,0,28.70 2025-07-12 05:00,45.0,,0.0,0,50.69 2025-07-12 06:00,48.0,,0.0,0,119.10 2025-07-12 07:00,56.0,,0.0,0,240.80 2025-07-12 08:00,56.0,,0.0,0,389.00 2025-07-12 09:00,59.0,,0.0,0,375.70 2025-07-12 10:00,62.0,,0.0,0,449.70 2025-07-12 11:00,63.0,,0.0,0,369.40 2025-07-12 12:00,65.0,,0.0,0,574.10 2025-07-12 13:00,68.0,,0.0,0,418.90 2025-07-12 14:00,66.0,,0.0,0,503.00 2025-07-12 15:00,67.0,,0.0,0,359.60 2025-07-12 16:00,67.0,,0.0,0,320.40 2025-07-12 17:00,69.0,,0.0,0,259.40 2025-07-12 18:00,67.0,,0.0,0,218.80 2025-07-12 19:00,65.0,,0.0,0,103.50 2025-07-12 20:00,64.0,,0.0,0,56.24 2025-07-12 21:00,58.0,,0.0,0,20.60 2025-07-12 22:00,53.0,,0.0,0,7.81 2025-07-12 23:00,50.0,,0.0,0,0.87 2025-07-13 00:00,45.0,,0.0,0,0.10 2025-07-13 01:00,44.0,,0.0,0,0.33 2025-07-13 02:00,43.0,,0.0,0,2.41 2025-07-13 03:00,43.0,,0.0,0,11.47 2025-07-13 04:00,44.0,,0.0,0,29.97 2025-07-13 05:00,45.0,,0.0,0,56.81 2025-07-13 06:00,48.0,,0.0,0,114.20 2025-07-13 07:00,54.0,,0.0,0,199.80 2025-07-13 08:00,59.0,,0.0,0,344.90 2025-07-13 09:00,61.0,,0.0,0,480.80 2025-07-13 10:00,65.0,,0.0,0,473.60 2025-07-13 11:00,66.0,,0.0,0,623.10 2025-07-13 12:00,69.0,,0.0,0,598.00 2025-07-13 13:00,68.0,,0.0,0,649.90 2025-07-13 14:00,69.0,,0.0,0,637.70 2025-07-13 15:00,70.0,,0.0,0,595.70 2025-07-13 16:00,69.0,,0.0,0,478.10 2025-07-13 17:00,71.0,,0.0,0,380.80 2025-07-13 18:00,69.0,,0.0,0,248.40 2025-07-13 19:00,67.0,,0.0,0,68.42 2025-07-13 20:00,57.0,,0.0,0,41.73 2025-07-13 21:00,54.0,,0.0,0,20.48 2025-07-13 22:00,51.0,,0.0,0,6.11 2025-07-13 23:00,49.0,,0.0,0,0.85 2025-07-14 00:00,49.0,,0.0,0,0.12 2025-07-14 01:00,52.0,,0.0,0,0.08 2025-07-14 02:00,53.0,,0.0,0,1.13 2025-07-14 03:00,48.0,,0.0,0,5.60 2025-07-14 04:00,46.0,,0.0,0,27.85 2025-07-14 05:00,50.0,,0.0,0,32.57 2025-07-14 06:00,48.0,,0.0,0,102.30 2025-07-14 07:00,57.0,,0.0,0,226.90 2025-07-14 08:00,58.0,,0.0,0,369.90 2025-07-14 09:00,59.0,,0.0,0,341.10 2025-07-14 10:00,60.0,,0.0,0,408.40 2025-07-14 11:00,64.0,,0.0,0,601.60 2025-07-14 12:00,64.0,,0.0,0,720.70 2025-07-14 13:00,67.0,,0.0,0,512.70 2025-07-14 14:00,69.0,,0.0,0,515.70 2025-07-14 15:00,65.0,,0.0,0,296.30 2025-07-14 16:00,63.0,,0.0,0,