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
Click to View Chart
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 Fourche15 Mar 20243.43-14-3.748%29 Mar 7.10 0.1003 May
Bighorn12 May 202412.67180.9108%24 Apr 11.77 12.2621 Jun
Cheyenne08 Mar 20243.90-20-3.652%29 Mar 7.55 0.1001 May
Laramie11 Apr 202415.13-7-1.293%18 Apr 16.31 13.2413 Jun
Little Snake01 Apr 202422.79-52.3111%06 Apr 20.50 16.2619 Jun
Lower Green09 Apr 202414.4210.8106%08 Apr 13.58 10.1613 Jun
Lower North Platte11 Apr 20249.97-3-3.176%14 Apr 13.05 7.5029 May
Madison11 May 202419.9027-3.984%14 Apr 23.75 18.4325 Jun
Powder11 Apr 20248.24-3-2.875%14 Apr 11.01 7.7810 Jun
Shoshone11 May 202417.2017-0.995%24 Apr 18.08 15.6029 Jun
Snake11 Apr 202420.89-10.0100%12 Apr 20.85 15.2930 Jun
South Platte04 Apr 20245.506-1.183%29 Mar 6.60 0.0026 Apr
Sweetwater11 May 202418.55213.3122%20 Apr 15.25 17.7506 Jun
Tongue10 May 202410.8112-2.681%28 Apr 13.38 9.6709 Jun
Upper Bear03 Apr 202419.31-61.5108%09 Apr 17.81 11.8916 Jun
Upper Green03 Apr 202414.69-8-1.392%11 Apr 15.96 11.9119 Jun
Upper North Platte11 Apr 202423.06-5-1.694%16 Apr 24.63 22.5528 Jun
Wind02 Apr 202413.50-20-0.696%22 Apr 14.11 12.5826 Jun
Yellowstone11 Apr 202417.25-13-4.978%24 Apr 22.12 15.6602 Jul
Data from Natural Resources Conservation Service SnoTel Network