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 2.5303 May
Bighorn28 Mar 20248.52-27-3.272%24 Apr 11.77 8.5221 Jun
Cheyenne08 Mar 20243.90-20-3.652%29 Mar 7.55 2.8001 May
Laramie28 Mar 202414.27-21-2.087%18 Apr 16.31 14.2713 Jun
Little Snake28 Mar 202421.27-90.8104%06 Apr 20.50 21.2719 Jun
Lower Green28 Mar 202413.52-11-0.1100%08 Apr 13.58 13.5213 Jun
Lower North Platte28 Mar 20248.05-17-5.062%14 Apr 13.05 8.0529 May
Madison28 Mar 202417.88-17-5.975%14 Apr 23.75 17.8825 Jun
Powder27 Mar 20245.40-18-5.649%14 Apr 11.01 5.3810 Jun
Shoshone28 Mar 202414.98-27-3.183%24 Apr 18.08 14.9829 Jun
Snake28 Mar 202419.58-15-1.394%12 Apr 20.85 19.5830 Jun
South Platte28 Mar 20245.40-1-1.282%29 Mar 6.60 5.4026 Apr
Sweetwater28 Mar 202412.90-23-2.385%20 Apr 15.25 12.9006 Jun
Tongue27 Mar 20247.20-32-6.254%28 Apr 13.38 7.1009 Jun
Upper Bear28 Mar 202417.45-12-0.498%09 Apr 17.81 17.4516 Jun
Upper Green25 Mar 202413.16-17-2.882%11 Apr 15.96 12.6419 Jun
Upper North Platte28 Mar 202421.39-19-3.287%16 Apr 24.63 21.3928 Jun
Wind28 Mar 202412.42-25-1.788%22 Apr 14.11 12.4226 Jun
Yellowstone28 Mar 202416.04-27-6.173%24 Apr 22.12 16.0402 Jul
Data from Natural Resources Conservation Service SnoTel Network