#------------------------------------------------- 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: Monthly # Date Range: Period of Record # Report Instantaneous Data As: End of Month # # Data for the following site(s) are contained in this file: # # SNOTEL 957: Atigun Pass, AK # SNOTEL 968: Imnaviat Creek, 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 - End of Month 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 - End of Month N/A Inches N/A SNWD Total snow depth # Precipitation Accumulation Value None Instantaneous - End of Month N/A Inches N/A PREC Water year accumulated precipitation # Air Temperature Observed Value None Instantaneous - End of Month N/A Degrees fahrenheit N/A TOBS Instantaneously observed air temperature # Air Temperature Maximum Value None Month N/A Degrees fahrenheit N/A TMAX Maximum air temperature - sub-hourly sampling frequency # Air Temperature Minimum Value None Month N/A Degrees fahrenheit N/A TMIN Minimum air temperature - sub-hourly sampling frequency # Air Temperature Average Value None Month N/A Degrees fahrenheit N/A TAVG Average air temperature - sub-hourly sampling frequency # # 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 # B Back Estimate Regression-based estimate for homogenizing collocated Snow Course and Snow Pillow data sets # K Estimate Estimate # X External Estimate External estimate # S Suspect Suspect data # # 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 # #------------------------------------------------------------------------------------------------------ # # Reporting Frequency: Monthly; Date Range: Period of Record # # As of: May 2, 2024, 1:37:22 AM GMT-08:00 # Date,Station Id,Station Name,Snow Water Equivalent (in) End of Month Values,Snow Depth (in) End of Month Values,Precipitation Accumulation (in) End of Month Values,Air Temperature Observed (degF) End of Month Values,Air Temperature Maximum (degF),Air Temperature Minimum (degF),Air Temperature Average (degF) Mar 1983,957,Atigun Pass,,,4.3,,,, Mar 1984,957,Atigun Pass,,,4.0,,,, Mar 1985,957,Atigun Pass,,,3.4,,,, Mar 1986,957,Atigun Pass,,,5.4,,,, Mar 1987,957,Atigun Pass,,,5.4,,,, Mar 1988,957,Atigun Pass,,,6.4,,,, Mar 1989,957,Atigun Pass,,,5.9,,,, Mar 1990,957,Atigun Pass,,,4.5,,,, Mar 1991,957,Atigun Pass,,,5.5,,,, Mar 1992,957,Atigun Pass,,,3.9,,,, Mar 1993,957,Atigun Pass,,,8.6,,,, Mar 1994,957,Atigun Pass,,,8.8,,,, Mar 1995,957,Atigun Pass,,,6.2,,,, Mar 1996,957,Atigun Pass,,,5.5,,,, Mar 1997,957,Atigun Pass,,,5.6,,,, Mar 1998,957,Atigun Pass,,,4.1,,,, Mar 1999,957,Atigun Pass,,,4.4,,,, Mar 2000,957,Atigun Pass,,,5.5,11.5,,, Mar 2001,957,Atigun Pass,,,4.8,-24.3,,, Mar 2002,957,Atigun Pass,,,5.1,-7.8,,, Mar 2003,957,Atigun Pass,,,7.2,-7.8,,, Mar 2004,957,Atigun Pass,,,5.1,-11.6,,, Mar 2005,957,Atigun Pass,,,6.7,-0.4,,, Mar 2006,957,Atigun Pass,,,6.2,,,, Mar 2007,957,Atigun Pass,,,5.2,7.7,21.0,-45.9,-12.4 Mar 2008,957,Atigun Pass,,,5.6,,,, Mar 2009,957,Atigun Pass,,32,7.0,-1.7,19.8,-46.7,-12.0 Mar 2010,957,Atigun Pass,,25,4.8,16.3,29.8,-24.5,5.3 Mar 2011,957,Atigun Pass,,21,6.1,-4.7,23.7,-15.2,6.5 Mar 2012,957,Atigun Pass,,44,6.7,9.9,18.5,-37.5,-11.2 Mar 2013,957,Atigun Pass,,34,4.0,9.1,22.3,-27.9,-0.4 Mar 2014,957,Atigun Pass,,37,4.9,9.0,35.2,-31.4,5.9 Mar 2015,957,Atigun Pass,,38,4.3,15.6,27.7,-36.0,3.1 Mar 2016,957,Atigun Pass,,53,4.4,-6.5,26.1,-32.3,1.4 Mar 2017,957,Atigun Pass,,49,4.1,7.2,21.9,-31.9,-4.9 Mar 2018,957,Atigun Pass,,53,6.0,10.8,19.6,-12.6,5.5 Mar 2019,957,Atigun Pass,,49,6.6,25.0,34.0,-11.0,13.9 Mar 2020,957,Atigun Pass,,39,5.8,4.0,21.0,-29.0,-4.3 Mar 2021,957,Atigun Pass,,41,4.0,1.0,18.0,-33.0,-5.7 Mar 2022,957,Atigun Pass,,39,5.8,-6.0,25.0,-35.0,0.6 Mar 2023,957,Atigun Pass,,41,6.0,4.0,31.0,-29.0,1.3 Mar 2024,957,Atigun Pass,,38,7.4,0.0,28.0,-35.0,-0.8 Mar 1981,968,Imnaviat Creek,,,7.6,,,, Mar 1982,968,Imnaviat Creek,,,2.8,,,, Mar 1983,968,Imnaviat Creek,,,7.9,,,, Mar 1984,968,Imnaviat Creek,,,2.8,,,, Mar 1985,968,Imnaviat Creek,,,3.6,,,, Mar 1986,968,Imnaviat Creek,,,3.4,,,, Mar 1987,968,Imnaviat Creek,,,2.9,,,, Mar 1988,968,Imnaviat Creek,,,2.9,,,, Mar 1989,968,Imnaviat Creek,,,2.9,,,, Mar 1990,968,Imnaviat Creek,,,3.4,,,, Mar 1991,968,Imnaviat Creek,,,3.0,,,, Mar 1992,968,Imnaviat Creek,,,3.7,,,, Mar 1993,968,Imnaviat Creek,,,4.7,,,, Mar 1994,968,Imnaviat Creek,,,2.9,,,, Mar 1995,968,Imnaviat Creek,,,,,,, Mar 1996,968,Imnaviat Creek,,,4.1,,,, Mar 1997,968,Imnaviat Creek,,,2.4,,,, Mar 1998,968,Imnaviat Creek,,,2.5,,,, Mar 1999,968,Imnaviat Creek,,,1.7,-2.0,,, Mar 2000,968,Imnaviat Creek,,,1.9,18.1,,, Mar 2001,968,Imnaviat Creek,,,2.4,-20.7,,, Mar 2002,968,Imnaviat Creek,,,2.3,10.2,,, Mar 2003,968,Imnaviat Creek,,,5.1,4.6,,, Mar 2004,968,Imnaviat Creek,,,,-16.1,,, Mar 2005,968,Imnaviat Creek,,,3.1,-2.2,,, Mar 2006,968,Imnaviat Creek,,,2.6,25.2,,, Mar 2007,968,Imnaviat Creek,,,3.1,27.7,31.5,-35.7,-8.9 Mar 2008,968,Imnaviat Creek,,,2.0,26.2,30.6,-34.4,-1.1 Mar 2009,968,Imnaviat Creek,,,4.8,6.3,28.2,-35.5,-5.3 Mar 2010,968,Imnaviat Creek,,,2.6,4.1,34.5,-24.3,6.1 Mar 2011,968,Imnaviat Creek,,,4.8,-1.5,35.6,-8.5,13.7 Mar 2012,968,Imnaviat Creek,,27,2.6,-20.4,16.9,-39.6,-16.1 Mar 2013,968,Imnaviat Creek,,27,2.6,11.7,33.6,-25.6,4.6 Mar 2014,968,Imnaviat Creek,,25,3.2,10.8,37.8,-27.0,11.5 Mar 2015,968,Imnaviat Creek,,34,3.7,23.5,34.2,-31.7,6.9 Mar 2016,968,Imnaviat Creek,,21,1.7,-7.4,33.6,-29.4,2.4 Mar 2017,968,Imnaviat Creek,,34,2.9,5.4,23.9,-26.1,-0.3 Mar 2018,968,Imnaviat Creek,,38,4.4,14.4,32.4,-18.0,13.7 Mar 2019,968,Imnaviat Creek,,20,3.1,29.8,43.0,-20.9,20.0 Mar 2020,968,Imnaviat Creek,,23,2.6,11.0,38.0,-28.0,4.7 Mar 2021,968,Imnaviat Creek,,22,2.2,-16.0,39.0,-41.0,1.0 Mar 2022,968,Imnaviat Creek,,18,2.9,0.0,33.0,-27.0,5.9 Mar 2023,968,Imnaviat Creek,,19,3.5,6.0,47.0,-27.0,9.0 Mar 2024,968,Imnaviat Creek,,32,3.7,0.0,40.0,-36.0,0.6