Dense Fog Advisory in Northern Blaine County

Dense Fog Advisory issued December 24 at 10:35PM MST until December 25 at 3:00AM MST by NWS Great Falls MT

• Event Start: 2025-12-24T22:35:00-07:00
• Event End: 2025-12-25T03:00:00-07:00
• Event Certainty: Likely
• Event Severity: Moderate

Event Description

• WHAT: Variable visibility down to a quarter mile or less in dense freezing fog.
• WHERE: A portion of north central Montana.
• WHEN: Until 3 AM MST Thursday.
• IMPACTS: Low visibility and frost deposition and or freezing rain and drizzle could make driving conditions hazardous.
• ADDITIONAL DETAILS: The fog should begin to lift in a west to east fashion through 3 AM MST.

Event Instructions

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

Winter Weather Advisory in Northern Blaine County

Winter Weather Advisory issued December 24 at 9:37PM MST until December 25 at 5:00AM MST by NWS Great Falls MT

• Event Start: 2025-12-24T23:00:00-07:00
• Event End: 2025-12-25T05:00:00-07:00
• Event Certainty: Likely
• Event Severity: Moderate

Event Description

• WHAT: Mixed precipitation, including freezing rain. Total ice accumulations around a glaze.
• WHERE: Bears Paw Mountains and Southern Blaine, Hill County, and Northern Blaine County.
• WHEN: Until 5 AM MST Thursday.
• IMPACTS: Roads, sidewalks, and especially bridges and overpasses, will likely become slick and hazardous.
• ADDITIONAL DETAILS: Ice may accumulate on power lines and cause power outages.

Event Instructions

Slow down and take extra time to reach your destination. Pedestrians should watch for slippery sidewalks.