Weather Alerts For Powder River, WY

URGENT - WEATHER MESSAGE National Weather Service Riverton WY 436 PM 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 Cokeville, Jeffrey City, Rock Springs, Wamsutter, Casper, Green River, and Kemmerer 436 PM 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 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, strongest during daytime hours Wednesday. * IMPACTS...Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution if you must drive. Secure loose objects. &&