Headline:
Flood Watch issued July 21 at 10:41PM MDT until July 23 at 12:00AM MDT by NWS Great Falls MT
Event:
Flood Watch
Urgency:
Future
Effective:
July 21, 2026 - 9:41pm
Expires:
July 22, 2026 - 3:00pm
Description:
* WHAT...Flash flooding caused by excessive rainfall is possible.
* WHERE...A portion of southwest Montana, including the following
areas, Gallatin and Madison County Mountains and Centennial
Mountains, Northwest Beaverhead County and Ruby Mountains and
Southern Beaverhead Mountains.
* WHEN...From Wednesday afternoon through Wednesday evening.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Flooding may occur in poor drainage and urban areas.
* ADDITIONAL DETAILS...
- Slow moving thunderstorms capable of producing heavy rain are
expected Wednesday afternoon and evening.
- http://www.weather.gov/safety/flood
Instruction:
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
Area Description:
Northwest Beaverhead County; Ruby Mountains and Southern Beaverhead Mountains; Gallatin and Madison County Mountains and Centennial Mountains
Forcast Office:
NWS Great Falls MT
Sender: