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Winter Storm in Wind River Mountains East, Wyoming

Winter Storm May 17, 2026 – May 18, 2026 · Wind River Mountains East, Wyoming

What the National Weather Service wrote

Up to 14 inches of snow fell along the eastern Slopes of the Wind River Range. The snow and strong wind led to the closure of Highway 28 over South Pass.

The wider storm

An area of low pressure passed to the south of Wyoming and brought snow to central and southern portions of the state. The heaviest amounts of snow fell in the favored northeast upslope areas. Some notable amounts in the mountains included 23 inches on Casper Mountain and 19 inches above Sinks Canyon Park near Lander. In the lower elevations, 8 inches of new snow fell in Casper and Jeffrey City and 5 to 12 inches fell near Lander. In Eastern Sweetwater County, the Green Mountains and Wind River Range, winds gusting as over 55 mph brought local blizzard conditions, leading to closure of Interstate 80, US 287 and South Pass during the storm.

Source: NOAA Storm Events Database, event 1340290. Narratives are written by the National Weather Service forecast office that issued the report.

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