Severe · Flash Flood WatchActive alert

Flash Flood Watch issued October 21 at 10:06AM MDT until October 23

Affecting Boise Mountains

In effect until: Oct 22, 2026, 12:15 PM

Boise Mountains

Possible impact zone; conditions develop through 12:15 PM.

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

See it on the live map View official source

Read the original bulletin (official text)

* WHAT...Flash flooding and debris flows caused by excessive rainfall
are possible over the Crooked burn scar and Wapiti burn scar. Total
rainfall up to 1.25 inch is possible on the burn scars.

* WHERE...Wapiti and Crooked burn scars in southwest Idaho.

* WHEN...From Thursday evening through Friday morning.

* IMPACTS...Heavy rainfall over the Crooked and Wapiti burn scars is
expected up to and during the period of the watch. Residents near
the Crooked and Wapiti burn scar should prepare for potential
debris flow. 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...
- National Weather Service Meteorologists are forecasting heavy
rainfall over the Crooked and Wapiti burn scar, which may lead to
flash flooding and debris flows.
- Some locations that may experience flash flooding include...
Grandjean and Barber Flat Guard Station.
- https://www.weather.gov/safety/flood

Free. In your language.

Get the next alert for your area before it matters.

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

Flash Flood Watch issued October 21 at 10:06AM MDT until October 23

Get the next alert for your area before it matters.

Get alerts in your language