Supercell over Laramie
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Peak Snow Water Equivalent Dates and Totals by Basin With Meltout Dates

This year's "to-date" peak snow water equivalent (SWE) compared to median.

Red indicates earlier peak date or lower SWE compared to median

Blue indicates later peak date or higher SWE compared to median

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Basin
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This Year
Peak Date
This Year Peak
SWE (inches)
Days
Early/Late
Peak SWE
Dif (inches)
Percent of
Median Peak SWE
Median
Peak Date
Median Peak
SWE (inches)
Current
SWE
Median
Meltout Date
Belle Fourche07 Apr 20239.552.6138%02 Apr 6.9 0.030 Apr
Bighorn09 Apr 202312.0-160.3103%25 Apr 11.7 0.019 Jun
Cheyenne07 Apr 20239.251.7123%02 Apr 7.5 0.030 Apr
Laramie08 Apr 202317.3-111.4109%19 Apr 15.9 0.212 Jun
Little Snake09 Apr 202332.1311.6157%06 Apr 20.5 5.719 Jun
Lower Green09 Apr 202318.404.8135%09 Apr 13.6 1.312 Jun
Lower North Platte09 Apr 202314.7-61.9115%15 Apr 12.8 0.029 May
Madison09 Apr 202329.4-65.6124%15 Apr 23.8 6.624 Jun
Powder08 Apr 202311.6-91.0109%17 Apr 10.6 0.008 Jun
Shoshone09 Apr 202318.1-150.0100%24 Apr 18.1 1.629 Jun
Snake25 Apr 202325.6135.0124%12 Apr 20.6 4.028 Jun
South Platte09 Apr 20236.011-1.283%29 Mar 7.2 0.026 Apr
Sweetwater28 Apr 202320.0105.0133%18 Apr 15.0 2.505 Jun
Tongue09 Apr 202312.8-23-0.696%02 May 13.4 0.009 Jun
Upper Bear09 Apr 202325.9-39.3156%12 Apr 16.6 2.515 Jun
Upper Green08 Apr 202318.2-52.2114%13 Apr 16.0 2.518 Jun
Upper North Platte09 Apr 202329.2-74.8120%16 Apr 24.4 8.626 Jun
Wind28 Apr 202315.661.6111%22 Apr 14.0 1.125 Jun
Yellowstone28 Apr 202324.142.9114%24 Apr 21.2 3.602 Jul
Data from Natural Resources Conservation Service SnoTel Network