Headline:
Flash Flood Watch issued August 12 at 12:42PM MDT until August 13 at 4:00AM MDT by NWS Great Falls MT
Event:
Flash Flood Watch
Urgency:
Future
Effective:
August 12, 2026 - 11:42am
Expires:
August 13, 2026 - 3:00am
Description:
* WHAT...Flash flooding and debris flows caused by excessive rainfall
continue to be possible over the Horse Gulch burn scar.
* WHERE...A portion of central Montana, including the following
areas, Horse Gulch burn scar, including Riverside Campground.
* WHEN...From 4 PM MDT this afternoon through late tonight.
* IMPACTS...Heavy rainfall over the Horse Gulch burn scar is expected
up to and during the period of the watch. Residents near the Horse
Gulch 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 of low-lying areas, urbanized
street flooding, and debris flows in and near recent wildfire burn
scars.
* ADDITIONAL DETAILS...
- National Weather Service Meteorologists are forecasting heavy
rainfall over the Horse Gulch burn scar, which may lead to flash
flooding and debris flows.
- Some locations that may experience flash flooding include...
Horse Gulch burn scar and Riverside Campground.
- For flood safety, go to this web page.
http://www.weather.gov/safety/flood
Instruction:
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
Area Description:
Helena Valley; Canyon Ferry Area
Forcast Office:
NWS Great Falls MT
Sender:
w-nws.webmaster@noaa.gov