Montana Winter Storm Warning | Effective 04/15/2026 21:43

Headline: 
Winter Storm Warning issued April 15 at 10:43PM MDT until April 17 at 12:00AM MDT by NWS Great Falls MT
Event: 
Winter Storm Warning
Urgency: 
Expected
Effective: 
April 15, 2026 - 9:43pm
Expires: 
April 16, 2026 - 12:45pm
Description: 
* WHAT...Heavy snow expected. Additional snow accumulations between 4 and 9 inches up to pass level, with 8 to 14 inches in the mountains. Winds gusting up to 40 mph at times. * WHERE...Gallatin and Madison County Mountains and Centennial Mountains. * WHEN...Until midnight MDT Thursday Night. * IMPACTS...Travel could be very difficult and tire chains may be required for some vehicles. Falling and or blowing snow may significantly reduce visibility. Those in the backcountry should ensure they are prepared for dangerous conditions. Isolated power outages and or tree damage possible.
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: 
Gallatin and Madison County Mountains and Centennial Mountains
Forcast Office: 
NWS Great Falls MT