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 Fourche25 Mar 20255.20-3-1.776%28 Mar 6.87 0.0001 May
Bighorn06 Apr 202510.68-18-1.191%24 Apr 11.74 3.1221 Jun
Cheyenne11 Mar 20254.90-17-2.665%28 Mar 7.50 0.0001 May
Laramie07 Apr 202513.41-8-2.584%15 Apr 15.90 1.2113 Jun
Little Snake07 Apr 202518.481-2.488%06 Apr 20.90 2.5420 Jun
Lower Green06 Apr 202512.80-2-1.092%08 Apr 13.84 0.9913 Jun
Lower North Platte06 Apr 20259.25-8-3.573%14 Apr 12.75 0.0029 May
Madison09 Apr 202519.62-5-2.290%14 Apr 21.80 2.7425 Jun
Powder07 Apr 20257.61-7-3.072%14 Apr 10.61 0.8610 Jun
Shoshone25 Mar 202517.17-30-0.995%24 Apr 18.08 2.4429 Jun
Snake06 Apr 202522.55-51.7108%11 Apr 20.85 5.1829 Jun
South Platte20 Mar 20253.30-12-3.350%01 Apr 6.60 0.0026 Apr
Sweetwater25 Mar 202513.47-24-1.690%18 Apr 15.03 0.3006 Jun
Tongue02 May 202512.144-1.291%28 Apr 13.30 2.0009 Jun
Upper Bear06 Apr 202516.40-3-1.492%09 Apr 17.81 1.4015 Jun
Upper Green07 Apr 202516.47-40.5103%11 Apr 15.96 3.0619 Jun
Upper North Platte06 Apr 202521.98-10-2.490%16 Apr 24.35 7.1128 Jun
Wind07 Apr 202513.24-13-0.795%20 Apr 13.97 1.7425 Jun
Yellowstone30 Apr 202521.1270.3102%23 Apr 20.79 8.7501 Jul
Data from Natural Resources Conservation Service SnoTel Network