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 0.3703 May
Bighorn11 Apr 202410.48-13-1.389%24 Apr 11.77 9.4521 Jun
Cheyenne08 Mar 20243.90-20-3.652%29 Mar 7.55 0.5501 May
Laramie11 Apr 202415.13-7-1.293%18 Apr 16.31 14.5413 Jun
Little Snake08 Apr 202422.9822.5112%06 Apr 20.50 19.6419 Jun
Lower Green09 Apr 202414.4210.8106%08 Apr 13.58 12.3713 Jun
Lower North Platte11 Apr 20249.97-3-3.176%14 Apr 13.05 8.7529 May
Madison01 Apr 202419.23-13-4.581%14 Apr 23.75 17.9025 Jun
Powder11 Apr 20248.24-3-2.875%14 Apr 11.01 6.3110 Jun
Shoshone01 Apr 202415.50-23-2.686%24 Apr 18.08 14.2029 Jun
Snake11 Apr 202420.90-10.0100%12 Apr 20.85 19.2230 Jun
South Platte08 Apr 20245.5010-1.183%29 Mar 6.60 3.2026 Apr
Sweetwater02 Apr 202414.93-18-0.398%20 Apr 15.25 12.4706 Jun
Tongue12 Apr 20248.73-16-4.765%28 Apr 13.38 7.6309 Jun
Upper Bear03 Apr 202419.31-61.5108%09 Apr 17.81 15.9116 Jun
Upper Green03 Apr 202414.69-8-1.392%11 Apr 15.96 12.7019 Jun
Upper North Platte08 Apr 202423.09-8-1.594%16 Apr 24.63 22.4628 Jun
Wind02 Apr 202413.50-20-0.696%22 Apr 14.11 11.9326 Jun
Yellowstone11 Apr 202417.26-13-4.978%24 Apr 22.12 16.4402 Jul
Data from Natural Resources Conservation Service SnoTel Network