Severe · Flood WatchActive alert

Flood Watch issued September 19 at 3:09AM MDT until September 19 at

Affecting Helena Valley; Meagher County Valleys; Canyon Ferry Area; Gallatin Valley

In effect until: Sep 19, 2026, 9:15 PM

Helena Valley; Meagher County Valleys; Canyon Ferry Area; Gallatin Valley

Possible impact zone; conditions develop through 9:15 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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Read the original bulletin (official text)

* WHAT...Flooding caused by excessive rainfall continues to be
possible.

* WHERE...Portions of central and southwest Montana, including the
following areas, in central Montana, Canyon Ferry Area, Helena
Valley and Meagher County Valleys. In southwest Montana, Gallatin
Valley.

* WHEN...Through this afternoon.

* IMPACTS...Excessive runoff may result in flooding of low-lying and
flood-prone locations.

* ADDITIONAL DETAILS...
- An area of rain will bring additional precipitation amounts to
around 1.00 inch today with locally higher amounts near the
mountains.
- http://www.weather.gov/safety/flood

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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™

Flood Watch issued September 19 at 3:09AM MDT until September 19 at

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