Idaho, Wyoming, Montana Severe Flood Watch | Effective 07/23/2026 04:32

Headline: 
Flood Watch issued July 23 at 5:32AM MDT until July 23 at 6:00AM MDT by NWS Riverton WY
Event: 
Flood Watch
Urgency: 
Future
Effective: 
July 23, 2026 - 4:32am
Expires: 
July 23, 2026 - 5:45am
Description: 
The Flood Watch will expire for portions of central, north central, northwest, south central, southwest, and west central Wyoming, including the following areas, in central Wyoming, Casper Mountain, Green Mountains and Rattlesnake Range, Lander Foothills, Natrona County Lower Elevations, Upper Wind River Basin, Wind River Basin and Wind River Mountains West. In north central Wyoming, Bighorn Mountains Southeast, Bighorn Mountains West, Northeast Johnson County, Southeast Bighorn Basin and Southeast Johnson County. In northwest Wyoming, Jackson Hole, North Bighorn Basin, Teton and Gros Ventre Mountains and Yellowstone National Park. In south central Wyoming, East Sweetwater County, Flaming Gorge and Rock Springs and Green River. In southwest Wyoming, South Lincoln County. In west central Wyoming, Salt River and Wyoming Ranges, Star Valley, Upper Green River Basin and Upper Green River Basin Foothills. The flooding threat has ended. Therefore, the Flood Watch will expire at 6 AM MDT early this morning.
Area Description: 
Yellowstone National Park; North Bighorn Basin; Southeast Bighorn Basin; Bighorn Mountains West; Bighorn Mountains Southeast; Northeast Johnson County; Southeast Johnson County; Teton and Gros Ventre Mountains; Jackson Hole; Wind River Mountains West; Upper Wind River Basin; Wind River Basin; Lander Foothills; Green Mountains and Rattlesnake Range; Natrona County Lower Elevations; Casper Mountain; Star Valley; Salt River and Wyoming Ranges; Upper Green River Basin Foothills; Upper Green River Basin; South Lincoln County; Rock Springs and Green River; Flaming Gorge; East Sweetwater County
Forcast Office: 
NWS Riverton WY