Severe · Flood WatchActive alert
Flood Watch issued September 18 at 10:39AM MDT until September 19 at
Affecting Gallatin Valley
In effect until: Sep 19, 2026, 12:00 PM
Gallatin Valley
Possible impact zone; conditions develop through 12:00 PM.
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.
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The Flash Flood Watch has been changed to a Flood Watch.
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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™