< Winter Storm Warning Montana | Effective 03/12/2026 16:54

Winter Storm Warning Montana | Effective 03/12/2026 16:54

Headline: 
Winter Storm Warning issued March 12 at 5:54PM MDT until March 14 at 6:00PM MDT by NWS Great Falls MT
Event: 
Winter Storm Warning
Urgency: 
Expected
Effective: 
March 12, 2026 - 4:54pm
Expires: 
March 13, 2026 - 8:00am
Description: 
* WHAT...Periods of moderate to heavy snow expected. Total snow accumulations between 8 and 12 inches with up to 18 inches at the highest elevations. Winds gusting as high as 35 mph. * WHERE...Big Belt, Bridger and Castle Mountains, Elkhorn and Boulder Mountains, Helena Valley, and Meagher County Valleys. * WHEN...Until 6 PM MDT Saturday. * IMPACTS...Travel could be very difficult and tire chains may be required for some vehicles. Those in the backcountry should ensure they are prepared for dangerous conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes.
Instruction: 
If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. To see a graphical representation of the degree of stress on young livestock please visit our webpage and select Local Programs then Cold Air Advisory for Newborn Livestock.
Area Description: 
Helena Valley; Big Belt, Bridger and Castle Mountains; Meagher County Valleys; Elkhorn and Boulder Mountains
Forcast Office: 
NWS Great Falls MT