Headline:
Flash Flood Watch issued September 19 at 10:06AM MDT until September 20 at 12:00AM MDT by NWS Great Falls MT
Event:
Flash Flood Watch
Urgency:
Future
Effective:
September 19, 2026 - 9:06am
Expires:
September 19, 2026 - 5:15pm
Description:
* WHAT...Flash flooding and debris flows caused by excessive rainfall
are possible over the Horse Gulch area and burn scars from the
summer of 2026.
* WHERE...A portion of central Montana, including the following
areas, Big Belt, Bridger and Castle Mountains, Elkhorn and Boulder
Mountains and Little Belt and Highwood Mountains.
* WHEN...Through this evening.
* IMPACTS...Heavy rainfall over the Horse Gulch area and burn scars
from the summer of 2026 is expected up to and during the period of
the watch. Residents near the Horse Gulch area and burn scars from
the summer of 2026 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 recent burn scars, which may lead to flash flooding
and debris flows.
- Some locations that may experience flash flooding include...
Areas near recent burn scars from the summer 2026 and the Horse
Gulch area.
- 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:
Little Belt and Highwood Mountains; Big Belt, Bridger and Castle Mountains; Elkhorn and Boulder Mountains
Forcast Office:
NWS Great Falls MT
Sender:
w-nws.webmaster@noaa.gov