Snowfall occurred for an extended period of time starting on the 26th across south-central Wyoming in the Snowy and Sierra Madre Mountains. 5 to 2 feet, especially at elevations above 9000 feet.
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS CYS wrote it up.
Snowfall occurred for an extended period of time starting on the 26th across south-central Wyoming in the Snowy and Sierra Madre Mountains. Snowfall accumulation ranged from 1.5 to 2 feet, especially at elevations above 9000 feet.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Cheyenne, WY wrote its last area forecast discussion before the first event at Feb 25, 4:39 PM MST, 16 hours 21 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
2 heavy snow. Local standard time, as filed.
Numerous SNOTELs in the area estimated 15 to 20 inches of snow accumulation between the morning of the 26th and the afternoon of the 28th. Med Bow SNOTEL (elevation 10510 feet) estimated 18.9 inches of snowfall with 1.1 inches of snow water equivalent.
Numerous SNOTELs in the area estimated 20 to 25 inches of snow accumulation between the morning of the 26th and the afternoon of the 28th, especially above 9000 feet elevation. Old Battle SNOTEL (elevation 10000 feet) estimated 26.1 inches of snowfall with 1.6 inches of snow water equivalent.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2023Every state in 2023This day in weather historyWarnings in Wyoming, February 2023
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 1073380, 1073381.