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

Click Column Headers to Sort

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 Fourche31 Jan 20252.80-56-4.141%28 Mar 6.87 2.8001 May
Bighorn31 Jan 20255.35-83-6.446%24 Apr 11.74 5.3521 Jun
Cheyenne31 Jan 20253.50-56-4.047%28 Mar 7.50 3.5001 May
Laramie29 Jan 20255.19-76-10.733%15 Apr 15.90 5.1313 Jun
Little Snake31 Jan 20258.30-65-12.240%06 Apr 20.50 8.3019 Jun
Lower Green31 Jan 20256.09-67-7.545%08 Apr 13.58 6.0912 Jun
Lower North Platte31 Jan 20252.52-73-10.220%14 Apr 12.75 2.5229 May
Madison31 Jan 202511.20-72-9.853%13 Apr 20.98 11.2025 Jun
Powder31 Jan 20254.30-73-6.341%14 Apr 10.61 4.3010 Jun
Shoshone13 Jan 202511.38-100-6.663%23 Apr 17.98 11.3727 Jun
Snake22 Jan 202512.85-79-8.062%11 Apr 20.89 12.4029 Jun
South Platte22 Jan 20250.60254-5.710%29 Mar 6.30 0.2025 Apr
Sweetwater26 Jan 20257.47-82-7.650%18 Apr 15.03 7.4306 Jun
Tongue31 Jan 20254.04-90-9.330%01 May 13.30 4.0410 Jun
Upper Bear31 Jan 20257.61-68-10.243%09 Apr 17.81 7.6116 Jun
Upper Green18 Jan 20259.83-83-6.162%11 Apr 15.96 9.7316 Jun
Upper North Platte31 Jan 20259.23-75-15.138%16 Apr 24.35 9.2329 Jun
Wind31 Jan 20257.87-79-6.156%20 Apr 13.97 7.8725 Jun
Yellowstone31 Jan 202515.26-83-5.573%24 Apr 20.81 15.2601 Jul
Data from Natural Resources Conservation Service SnoTel Network