Weather Alerts For Powder River, WY

URGENT - WEATHER MESSAGE National Weather Service Riverton WY 859 AM MST Tue Dec 9 2025 Green Mountains and Rattlesnake Range-Natrona County Lower Elevations-Casper Mountain-South Lincoln County-Rock Springs and Green River-Flaming Gorge-East Sweetwater County- Including the cities of Casper, Green River, Jeffrey City, Cokeville, Kemmerer, Wamsutter, and Rock Springs 859 AM MST Tue Dec 9 2025 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 AM MST THURSDAY... * WHAT...West winds 30 to 40 mph with gusts up to 65 mph expected. Localized gusts up to 70 to 75 mph possible. * WHERE...Casper Mountain, Green Mountains and Rattlesnake Range, Natrona County Lower Elevations, Sweetwater County and South Lincoln County. Strongest winds are expected along South Pass and higher peaks of the Green Mountains and Rattlesnake Range. * WHEN...Through 5 AM MST Thursday. The strongest wind will occur during the daytime hours with a lull in the wind possible on Tuesday night. * IMPACTS...Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution if you must drive. Secure loose objects. &&