Riverton, Wyoming – A Winter Weather Advisory will bring snow and strong winds across western Wyoming overnight into Tuesday, impacting mountain travel and backcountry conditions.
According to the National Weather Service in Riverton, the advisory remains in effect from 11 p.m. Monday until 5 p.m. MST Tuesday for Yellowstone National Park, Jackson Hole, Star Valley, the Teton and Wind River ranges, and surrounding mountain areas.
Snowfall totals will vary by elevation. Much of Yellowstone National Park is expected to receive 3 to 6 inches, with 8 to 12 inches over Pitchstone Plateau. Mammoth may see up to 2 inches. In the Teton, Gros Ventre, Salt River, and Wind River ranges, forecasters expect 6 to 11 inches, with the highest elevations of the Wind River Range possibly nearing 20 inches.
Mountain passes could see significant accumulation. Teton and Togwotee Passes are forecast to receive 4 to 8 inches, while South Pass may see 2 to 5 inches.
Winds are expected to gust between 40 and 55 mph, especially across exposed ridges and higher elevations. In Jackson Hole and Star Valley, snowfall totals of 2 to 4 inches are expected, with a 40% chance Jackson exceeds 4 inches. The heaviest snow is anticipated between 11 p.m. and 9 a.m. Tuesday, with winds increasing after midnight.
Travel could become difficult, particularly across mountain passes during the Tuesday morning and evening commutes. Backcountry travel will be especially hazardous.
Motorists are urged to slow down and use caution. Road conditions are available at wyoroad.info.
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