Severe Thunderstorm Watch — Custer County, Montana
Conditions favor the development of severe thunderstorms in and near the watch area.
Current Status
⛈️ Active: Severe Thunderstorm Watch
Severe Thunderstorm Watch issued August 18 at 2:31PM MDT until August 18 at 9:00PM MDT by NWS Billings MT
THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 596 IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR THE FOLLOWING AREAS IN MONTANA THIS WATCH INCLUDES 10 COUNTIES IN CENTRAL MONTANA MUSSELSHELL IN SOUTH CENTRAL MONTANA BIG HORN CARBON YELLOWSTONE IN SOUTHEAST MONTANA CARTER CUSTER FALLON POWDER RIVER ROSEBUD TREASURE IN WYOMING THIS WATCH INCLUDES 1 COUNTY IN NORTH CENTRAL WYOMING SHERIDAN THIS INCLUDES THE CITIES OF ASHLAND, BAKER, BILLINGS, BRIDGER, BROADUS, COLSTRIP, CROW AGENCY, EKALAKA, FORSYTH, HARDIN, HYSHAM, JOLIET, LAME DEER, MILES CITY, RED LODGE, ROUNDUP, AND SHERIDAN.
Effective August 18, 2026 at 4:31 PM ET · Expires August 18, 2026 at 11:00 PM ET
Event Details
Event Type
Severe Thunderstorm Watch
Severity
severe
Issued By
NWS Billings MT
Expires
August 18, 2026 at 11:00 PM ET
Last Checked
1 minute ago
Also In Effect For
This same Severe Thunderstorm Watch also covers:
Other Active Alerts in Montana
Severe Thunderstorm Watch
Severe Thunderstorm Watch
Severe Thunderstorm Watch
Severe Thunderstorm Watch
Severe Thunderstorm Watch
Severe Thunderstorm Watch
Get Severe Thunderstorm Watch Alerts for Custer County
StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.
Frequently Asked Questions
What does a Severe Thunderstorm Watch mean for Custer County, Montana?
Conditions favor the development of severe thunderstorms in and near the watch area.
Is this Severe Thunderstorm Watch currently active?
Yes — this alert is active as of our last check (1 minute ago). It's set to expire August 18, 2026 at 11:00 PM ET.
How do I get notified about Severe Thunderstorm Watch alerts for Custer County?
Download StormCast free on Google Play and set Custer County, Montana as one of your monitored locations. StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.
What other areas does this alert cover?
This same Severe Thunderstorm Watch is also in effect for Rosebud County, Big Horn County, Carter County, Powder River County, Sheridan County, Yellowstone County, Treasure County, Carbon County, Musselshell County, Fallon County.