Severe · Flash Flood WatchActive alert

Flash Flood Watch issued September 2 at 2:03PM MDT until September 4

Affecting Boise Mountains

In effect until: Sep 3, 2026, 10:15 AM

Boise Mountains

Possible impact zone; conditions develop through 10:15 AM.

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

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Read the original bulletin (official text)

* WHAT...Flash flooding and debris flows caused by excessive rainfall
are possible over the Wapiti Burn Area.

* WHERE...Wapiti Burn Area.

* WHEN...From midnight MDT tonight through Friday evening.

* IMPACTS...Heavy rainfall over the Wapiti burn area is possible
during the period of the watch. Be sure to stay up to date with
information from local authorities. Heavy rainfall could trigger
flash flooding or debris flows in and near recent wildfire burn
scars.

* ADDITIONAL DETAILS...
- Heavy rainfall is possible over the burn scar, which may lead to
flash flooding and debris flows in Grandjean area.
- https://www.weather.gov/safety/flood

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

Flash Flood Watch issued September 2 at 2:03PM MDT until September 4

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