Headline:
Flood Watch issued September 18 at 10:39AM MDT until September 19 at 6:00PM MDT by NWS Great Falls MT
Event:
Flood Watch
Urgency:
Future
Effective:
September 18, 2026 - 9:39am
Expires:
September 19, 2026 - 5:00am
Description:
* WHAT...Flooding caused by excessive rainfall is possible.
* WHERE...The Canyon Ferry Area, Helena Valley, and Meagher County
Valleys in Central Montana
* WHEN...From 6 PM MDT this evening through Saturday afternoon.
* IMPACTS...Excessive runoff may result in flooding of low-lying and
flood-prone locations.
* ADDITIONAL DETAILS...
- Showers and thunderstorms capable of producing hourly rainfall
rates of between 0.25 inch to 0.5 inch are possible.
- Some locations impacted include Helena, Townsend, and White
Sulphur Springs
- http://www.weather.gov/safety/flood
Instruction:
You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop.
Area Description:
Helena Valley; Meagher County Valleys; Canyon Ferry Area
Forcast Office:
NWS Great Falls MT
Sender:
w-nws.webmaster@noaa.gov