Winter Weather Advisory in Gallatin and Madison County Mountains and Centennial Mountains

Winter Weather Advisory issued October 26 at 3:19AM MDT until October 27 at 6:00AM MDT by NWS Great Falls MT

• Event Start: 2026-10-26T21:00:00-06:00
• Event End: 2026-10-27T06:00:00-06:00
• Event Certainty: Likely
• Event Severity: Moderate

Event Description

• WHAT: Snow expected. Total snow accumulations 2 to 5 inches. Winds gusting as high as 40 mph.
• WHERE: Gallatin and Madison County Mountains and Centennial Mountains.
• WHEN: From 9 PM this evening to 6 AM MDT Tuesday.
• IMPACTS: Roads, and especially bridges and overpasses, will likely become slick and hazardous.

Event Instructions

Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.

Dense Fog Advisory in Gallatin and Madison County Mountains and Centennial Mountains

Dense Fog Advisory issued October 26 at 12:42AM MDT until October 26 at 12:00PM MDT by NWS Great Falls MT

• Event Start: 2026-10-26T00:42:00-06:00
• Event End: 2026-10-26T12:00:00-06:00
• Event Certainty: Likely
• Event Severity: Moderate

Event Description

• WHAT: Visibility one quarter mile or less in dense fog.
• WHERE: Canyon Ferry Area, Elkhorn and Boulder Mountains, Beaverhead and Western Madison below 6000ft, Gallatin Valley, Gallatin and Madison County Mountains and Centennial Mountains, Madison River Valley, Missouri Headwaters, and Northwest Beaverhead County.
• WHEN: Until noon MDT today.
• IMPACTS: Low visibility could make driving conditions hazardous.

Event Instructions

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.