Headline:
Flood Watch issued September 18 at 11:03AM MDT until September 20 at 6:00PM MDT by NWS Billings MT
Event:
Flood Watch
Urgency:
Future
Effective:
September 18, 2026 - 10:03am
Expires:
September 19, 2026 - 10:15am
Description:
A strong and slow moving weather system will impact the region
tonight through Sunday. Well above normal atmospheric moisture levels
combined with the dynamics from this storm system will provide the
potential for heavy rainfall during this period. Thunderstorms
embedded in the more general rainfall will have the potential to
produce flash flooding, particularly over recent burn scars.
* WHAT...Flooding caused by excessive rainfall is possible.
* WHERE...Custer county.
* WHEN...From 6 PM MDT this evening through Sunday afternoon.
* IMPACTS...Excessive runoff may result in flooding of creeks,
streams, and other low-lying and flood-prone locations. Flooding
may occur in poor drainage and urban areas.
* ADDITIONAL DETAILS...
- 1 to 2.5 inches of rainfall is forecast across the watch area
Friday night through Sunday. Locally heavier accumulations up to
4 inches are possible where thunderstorm activity develops.
- Any recent burn scars from this summer will have elevated Flash
Flood potential.
- http://www.weather.gov/safety/flood
Instruction:
Please monitor 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:
Custer
Forcast Office:
NWS Billings MT
Sender:
w-nws.webmaster@noaa.gov