Montana Moderate Special Weather Statement | Effective 09/17/2026 06:40

Headline: 
Special Weather Statement issued September 17 at 7:40AM MDT by NWS Billings MT
Event: 
Special Weather Statement
Urgency: 
Expected
Effective: 
September 17, 2026 - 6:40am
Expires: 
September 17, 2026 - 9:00am
Description: 
Localized dense fog has developed this morning from Miles City to Baker, with additional development along the Yellowstone River valley in Rosebud county. While not widespread, areas where fog has developed are reporting visibilities under half a mile at times. Drivers should be prepared for variable visibility while traveling, and slow down using extra caution when fog is encountered. This includes portions of I-94 and US-12. Fog is expected to dissipate by around 10 am this morning.
Instruction: 
Slow down and use extra caution while traveling this morning.
Area Description: 
Northern Rosebud; Custer; Fallon
Forcast Office: 
NWS Billings MT
Sender: 
w-nws.webmaster@noaa.gov