#------------------------------------------------- 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: 2025-07-14 18:00 to 2025-07-17 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: 2025-07-14 18:00 to 2025-07-17 17:00 # # As of: Jul 17, 2025, 5:18:59 PM GMT-08:00 # Date,Air Temperature Observed (degF),Precipitation Accumulation (in),Snow Water Equivalent (in),Snow Depth (in),Solar Radiation Average (watt/m2) 2025-07-14 18:00,53.0,,0.0,0,23.73 2025-07-14 19:00,53.0,,0.0,0,26.95 2025-07-14 20:00,53.0,,0.0,0,39.89 2025-07-14 21:00,52.0,,0.0,0,21.51 2025-07-14 22:00,51.0,,0.0,0,1.83 2025-07-14 23:00,49.0,,0.0,0,0.34 2025-07-15 00:00,47.0,,0.0,0,0.07 2025-07-15 01:00,49.0,,0.0,0,0.06 2025-07-15 02:00,50.0,,0.0,0,0.22 2025-07-15 03:00,49.0,,0.0,0,2.00 2025-07-15 04:00,49.0,,0.0,0,14.32 2025-07-15 05:00,48.0,,0.0,0,25.59 2025-07-15 06:00,48.0,,0.0,0,52.22 2025-07-15 07:00,48.0,,0.0,0,91.40 2025-07-15 08:00,49.0,,0.0,0,183.60 2025-07-15 09:00,50.0,,0.0,0,181.60 2025-07-15 10:00,51.0,,0.0,0,217.20 2025-07-15 11:00,53.0,,0.0,0,293.10 2025-07-15 12:00,53.0,,0.0,0,288.50 2025-07-15 13:00,51.0,,0.0,0,223.90 2025-07-15 14:00,52.0,,0.0,0,188.10 2025-07-15 15:00,52.0,,0.0,0,130.90 2025-07-15 16:00,51.0,,0.0,0,107.60 2025-07-15 17:00,49.0,,0.0,0,72.78 2025-07-15 18:00,48.0,,0.0,0,76.53 2025-07-15 19:00,48.0,,0.0,0,44.43 2025-07-15 20:00,47.0,,0.0,0,25.73 2025-07-15 21:00,47.0,,0.0,0,6.91 2025-07-15 22:00,47.0,,0.0,0,1.48 2025-07-15 23:00,45.0,,0.0,0,0.19 2025-07-16 00:00,45.0,,0.0,0,0.07 2025-07-16 01:00,44.0,,0.0,0,0.46 2025-07-16 02:00,43.0,,0.0,0,1.82 2025-07-16 03:00,43.0,,0.0,0,8.57 2025-07-16 04:00,43.0,,0.0,0,27.56 2025-07-16 05:00,44.0,,0.0,0,70.09 2025-07-16 06:00,46.0,,0.0,0,106.10 2025-07-16 07:00,47.0,,0.0,0,149.70 2025-07-16 08:00,50.0,,0.0,0,381.40 2025-07-16 09:00,52.0,,0.0,0,308.10 2025-07-16 10:00,53.0,,0.0,0,298.20 2025-07-16 11:00,55.0,,0.0,0,197.50 2025-07-16 12:00,56.0,,0.0,0,303.00 2025-07-16 13:00,58.0,,0.0,0,306.20 2025-07-16 14:00,59.0,,0.0,0,376.50 2025-07-16 15:00,60.0,,0.0,0,304.80 2025-07-16 16:00,59.0,,0.0,0,206.70 2025-07-16 17:00,59.0,,0.0,0,141.50 2025-07-16 18:00,58.0,,0.0,0,111.10 2025-07-16 19:00,58.0,,0.0,0,96.90 2025-07-16 20:00,57.0,,0.0,0,41.50 2025-07-16 21:00,54.0,,0.0,0,20.67 2025-07-16 22:00,53.0,,0.0,0,4.80 2025-07-16 23:00,53.0,,0.0,0,0.42 2025-07-17 00:00,53.0,,0.0,0,0.03 2025-07-17 01:00,52.0,,0.0,0,0.08 2025-07-17 02:00,52.0,,0.0,0,0.43 2025-07-17 03:00,50.0,,0.0,0,1.88 2025-07-17 04:00,51.0,,0.0,0,8.34 2025-07-17 05:00,51.0,,0.0,0,25.34 2025-07-17 06:00,52.0,,0.0,0,55.43 2025-07-17 07:00,54.0,,0.0,0,155.40 2025-07-17 08:00,57.0,,0.0,0,406.50 2025-07-17 09:00,58.0,,0.0,0,366.60 2025-07-17 10:00,60.0,,0.0,0,241.40 2025-07-17 11:00,63.0,,0.0,0,483.50 2025-07-17 12:00,68.0,,0.0,0,183.80 2025-07-17 13:00,61.0,,0.0,0,112.60 2025-07-17 14:00,61.0,,0.0,0,116.40 2025-07-17 15:00,61.0,,0.0,0,