Idaho, Wyoming, Montana Severe Flood Watch | Effective 08/29/2026 12:07

Headline: 
Flood Watch issued August 29 at 1:07PM MDT until August 30 at 12:00PM MDT by NWS Riverton WY
Event: 
Flood Watch
Urgency: 
Future
Effective: 
August 29, 2026 - 12:07pm
Expires: 
August 30, 2026 - 7:00am
Description: 
* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of central, northwest, and west central Wyoming, including the following areas, in central Wyoming, Wind River Mountains West. In northwest Wyoming, Absaroka Mountains, Jackson Hole, Teton and Gros Ventre Mountains and Yellowstone National Park. In west central Wyoming, Salt River and Wyoming Ranges and Star Valley. * WHEN...Through Sunday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Increased moisture from the Pacific will move across northwest Wyoming through the weekend, bringing an extended chance for showers and thunderstorms. The increased moisture will have the potential to produce locally heavy rainfall, providing excessive runoff in flood-prone and low-lying areas. - http://www.weather.gov/safety/flood
Instruction: 
You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
Area Description: 
Yellowstone National Park; Absaroka Mountains; Teton and Gros Ventre Mountains; Jackson Hole; Wind River Mountains West; Star Valley; Salt River and Wyoming Ranges
Forcast Office: 
NWS Riverton WY
Sender: 
w-nws.webmaster@noaa.gov