Wyoming – NRCS

Report #25 Weekly Snow Report May 26, 2020

Good day to all. This is the 25th Snow Report for Water Year 2020 (2019-2020 snow season). Currently the state’s SNOTELs are reading 106% of median with a basin high of 171% and a basin low of 0%. Last year the state was at 159%, and at 89% in 2018. The map may differ slightly from the table depending upon how many stations were reporting at the time. This report and a map displaying basin SWE percentages of median for the state may be found at: http://www.wrds.uwyo.edu/wrds/nrcs/nrcs.html.

For information on the use of median vs. average go to http://www.wcc.nrcs.usda.gov/normals/median_average.htm

SNOW WATER EQUIVALENT AS PERCENT OF MEDIAN. The following table shows the percent of median for today, the 2 previous weeks, one year ago, and two years ago for Wyoming basins. Normal (median) is based on all reporting SNOTEL sites in the basin with calculated medians (newer SNOTEL sites do not have medians figured), but does not include manually measured snow courses. The statewide SNOTEL percent of median is a percent of median using all SNOTEL sites in Wyoming with calculated medians. The weighted state average is figured using the area of basins (square miles). The reference period for computing medians is the 30-year period 1981 through 2010.

Basin 5/26/2020 5/18/2020 5/11/2020 5/26/2019 5/26/2019 Snake 114 98 97 128 110 Madison 99 83 91 158 120 Yellowstone 117 103 99 121 132 Wind 55* 61 77 194* 93* Bighorn 98* 95 94 154* 88* Shoshone 94 81 81 108 121 Powder 91* 83 86 203* 60* Tongue 102 102 91 236 39 Belle Fourche * * * * * Cheyenne * * * * * Upper North Platte 93 88 89 160 53 Sweetwater 2 22 42 223 20 Lower North Platte 171* 108 110 2686* 0* Laramie 87 82 94 167 16 South Platte 70* 78* 92* 138* 14* Little Snake 86* 79 83 167* 30* Upper Green 125 90 85 175* 110 Lower Green 64* 61* 68* 169* 49* Upper Bear 77* 57 63 252* 49* Statewide SNOTEL Percent of Median 106 92 90 159 89 Weighted State Average (Area) 34 65 68 45 28 Max 171 108 110 2686 110 Min 0 0 0 0 0

red = down blue = up green = same * data is suspect

For more info contact: