Montana, Wyoming Severe Severe Thunderstorm Watch | Effective 08/18/2026 13:31

Headline: 
Severe Thunderstorm Watch issued August 18 at 2:31PM MDT until August 18 at 9:00PM MDT by NWS Billings MT
Event: 
Severe Thunderstorm Watch
Urgency: 
Future
Effective: 
August 18, 2026 - 1:31pm
Expires: 
August 18, 2026 - 8:00pm
Description: 
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.
Area Description: 
Big Horn, MT; Carbon, MT; Carter, MT; Custer, MT; Fallon, MT; Musselshell, MT; Powder River, MT; Rosebud, MT; Treasure, MT; Yellowstone, MT; Sheridan, WY
Forcast Office: 
NWS Billings MT
Sender: 
w-nws.webmaster@noaa.gov