#------------------------------------------------- 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: 2025-07-02 18:00 to 2025-07-05 17:00 # # Data for the following site(s) are contained in this file: # # SNOTEL 2081: Nenana, 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 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 # Wind Speed Maximum Value None Hour N/A Miles/hour N/A WSPDX Maximum wind speed # Wind Speed Average Value None Hour N/A Miles/hour N/A WSPDV Average wind speed # Wind Direction Average Value None Hour N/A Degrees N/A WDIRV Average wind direction # # 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 # #------------------------------------------------------------------------------------------------------ # # Nenana (2081) # Alaska SNOTEL Site - 370 ft # Reporting Frequency: Hourly; Date Range: 2025-07-02 18:00 to 2025-07-05 17:00 # # As of: Jul 5, 2025, 5:17:44 PM GMT-08:00 # Date,Air Temperature Observed (degF),Precipitation Accumulation (in),Snow Depth (in),Solar Radiation Average (watt/m2),Wind Speed Maximum (mph),Wind Speed Average (mph),Wind Direction Average (degree) 2025-07-02 18:00,80.0,8.6,0,197.80,8.8,2.6,50 2025-07-02 19:00,79.0,8.7,0,105.40,7.1,1.6,50 2025-07-02 20:00,77.0,8.8,,47.36,7.5,2.0,53 2025-07-02 21:00,76.0,8.9,,29.56,6.2,2.2,42 2025-07-02 22:00,73.0,9.0,0,17.31,8.0,3.0,32 2025-07-02 23:00,71.0,9.0,,4.30,6.3,2.1,16 2025-07-03 00:00,66.0,9.1,0,1.33,6.3,0.9,8 2025-07-03 01:00,65.0,9.2,0,1.74,3.6,0.7,46 2025-07-03 02:00,66.0,9.2,,3.91,5.8,1.6,53 2025-07-03 03:00,66.0,9.2,,15.77,7.0,1.1,71 2025-07-03 04:00,65.0,9.2,,46.18,5.1,0.9,39 2025-07-03 05:00,64.0,9.2,0,133.20,2.6,0.3,278 2025-07-03 06:00,62.0,9.2,,214.70,1.9,0.1,184 2025-07-03 07:00,67.0,9.2,0,295.30,3.3,0.5,45 2025-07-03 08:00,71.0,9.1,,391.20,5.9,1.2,127 2025-07-03 09:00,72.0,9.0,,389.00,4.2,0.7,95 2025-07-03 10:00,72.0,8.9,,308.80,3.4,0.6,183 2025-07-03 11:00,73.0,8.8,,403.90,5.9,1.1,30 2025-07-03 12:00,75.0,8.8,0,581.00,4.8,1.2,38 2025-07-03 13:00,77.0,8.6,0,474.90,3.5,0.5,66 2025-07-03 14:00,78.0,8.6,,347.30,4.0,0.4,34 2025-07-03 15:00,77.0,8.6,,478.90,3.9,0.7,20 2025-07-03 16:00,79.0,8.6,0,340.10,4.8,0.7,37 2025-07-03 17:00,78.0,8.6,0,300.10,3.3,0.9,45 2025-07-03 18:00,77.0,8.6,0,238.90,3.5,0.3,30 2025-07-03 19:00,77.0,8.6,0,158.80,1.6,0.1,39 2025-07-03 20:00,73.0,8.8,0,65.86,0.0,0.0,0 2025-07-03 21:00,65.0,8.9,0,25.69,0.9,0.0,28 2025-07-03 22:00,59.0,9.0,0,10.51,0.8,0.0,28 2025-07-03 23:00,55.0,9.1,0,2.85,0.0,0.0,0 2025-07-04 00:00,51.0,9.2,,1.11,0.0,0.0,0 2025-07-04 01:00,48.0,9.2,,1.26,0.9,0.1,28 2025-07-04 02:00,46.0,9.2,0,3.11,1.8,0.1,237 2025-07-04 03:00,45.0,9.2,0,9.00,0.9,0.0,257 2025-07-04 04:00,44.0,9.3,0,28.20,0.9,0.0,257 2025-07-04 05:00,46.0,9.3,,84.70,2.3,0.2,19 2025-07-04 06:00,51.0,9.3,,143.20,1.8,0.0,216 2025-07-04 07:00,60.0,9.2,0,213.00,3.4,0.9,208 2025-07-04 08:00,65.0,9.2,0,296.20,2.9,0.3,286 2025-07-04 09:00,68.0,9.1,0,390.40,4.6,0.7,281 2025-07-04 10:00,71.0,9.0,,490.40,3.3,0.7,219 2025-07-04 11:00,74.0,8.8,,584.00,3.4,0.6,24 2025-07-04 12:00,77.0,8.6,,598.60,2.8,0.5,28 2025-07-04 13:00,80.0,8.5,0,583.90,5.7,1.1,26 2025-07-04 14:00,81.0,8.5,0,475.90,4.2,0.9,22 2025-07-04 15:00,81.0,8.5,0,377.70,4.6,0.8,22 2025-07-04 16:00,81.0,8.5,0,357.80,3.9,0.8,27 2025-07-04 17:00,81.0,8.6,0,307.70,2.4,0.2,16 2025-07-04 18:00,82.0,8.6,0,226.40,3.8,0.4,32 2025-07-04 19:00,78.0,8.6,0,131.30,0.0,0.0,0 2025-07-04 20:00,73.0,8.7,,72.85,1.2,0.1,39 2025-07-04 21:00,68.0,8.9,0,41.12,0.0,0.0,0 2025-07-04 22:00,62.0,9.0,,12.66,0.9,0.1,42 2025-07-04 23:00,58.0,9.1,,3.42,0.0,0.0,0 2025-07-05 00:00,54.0,9.1,,1.01,1.2,0.1,7 2025-07-05 01:00,52.0,9.2,,0.96,3.5,0.2,199 2025-07-05 02:00,51.0,9.2,,2.71,2.5,0.3,209 2025-07-05 03:00,50.0,9.2,,12.81,2.4,0.2,173 2025-07-05 04:00,49.0,9.2,0,45.25,1.4,0.0,115 2025-07-05 05:00,50.0,9.2,,102.00,1.1,0.0,160 2025-07-05 06:00,55.0,9.2,,168.30,2.2,0.0,295 2025-07-05 07:00,62.0,9.2,,245.00,2.3,0.1,120 2025-07-05 08:00,68.0,9.1,,336.20,0.9,0.1,138 2025-07-05 09:00,75.0,9.0,,407.20,4.1,0.2,100 2025-07-05 10:00,79.0,8.9,0,539.50,7.1,1.4,70 2025-07-05 11:00,82.0,8.7,,454.00,6.2,1.1,77 2025-07-05 12:00,80.0,8.6,0,188.50,1.6,0.1,193 2025-07-05 13:00,76.0,8.7,,284.90,2.0,0.4,191 2025-07-05 14:00,81.0,8.7,0,215.60,3.0,0.7,203 2025-07-05 15:00,78.0,8.7,,,,,