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Severe · Flash Flood WatchActive alert

Flash Flood Watch issued September 18 at 10:50AM MDT until September 19

Affecting West Central Mountains; Lower Treasure Valley; Boise Mountains; Upper Treasure Valley; Western Magic Valley; Camas Prairie

In effect until: Sep 19, 2026, 6:00 AM

West Central Mountains; Lower Treasure Valley; Boise Mountains; Upper Treasure Valley; Western Magic Valley; Camas Prairie

Possible impact zone; conditions develop through 6:00 AM.

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

Read the original bulletin (official text)
* WHAT...Flash flooding and debris flows caused by excessive rainfall
are possible over the Wapiti, Crooked, Buckhorn burn scar areas.

* WHERE...Portions of south central and southwest Idaho, including
the following areas, in south central Idaho, Western Magic Valley.
In southwest Idaho, Boise Mountains, Camas Prairie, Lower Treasure
Valley, Upper Treasure Valley and West Central Mountains.

* WHEN...Through this evening.

* IMPACTS...Heavy rainfall over the Wapiti, Crooked, Buckhorn burn
scar is expected up to and during the period of the watch.
Residents near the Wapiti, Crooked, Buckhorn 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 burn scar, which may lead to flash flooding and
debris flows.
- Some locations that may experience flash flooding include...
Idaho City, Fairfield, Lowman, Horseshoe Bend, Pine, Prairie,
Atlanta, Anderson Dam, Corral, Centerville, Pioneerville, Garden
Valley, Banks, Gardena, Crouch, Placerville, Trinity Lakes, Rocky
Bar, Dutch Creek Guard Station and Featherville.
- https://www.weather.gov/safety/flood
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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™