Dense Fog Advisory in Hill County

Dense Fog Advisory issued December 24 at 6:37PM MST until December 24 at 11:00PM MST by NWS Great Falls MT

• Event Start: 2025-12-24T18:37:00-07:00
• Event End: 2025-12-24T23:00:00-07:00
• Event Certainty: Likely
• Event Severity: Moderate

Event Description

• WHAT: Visibility less than a quarter of a mile in dense freezing fog.
• WHERE: Much of North Central MT.
• WHEN: Until 11 PM MST this evening.
• IMPACTS: Low visibility could make driving conditions hazardous.
• ADDITIONAL DETAILS: Areas of freezing fog will create some minor ice accumulations.

Event Instructions

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

Winter Weather Advisory in Hill County

Winter Weather Advisory issued December 24 at 2:02PM 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 expected. Total snow accumulations up to one inch and ice accumulations around a light glaze.
• WHERE: Bears Paw Mountains and Southern Blaine, Hill County, and Northern Blaine County.
• WHEN: From 11 PM this evening to 5 AM MST Thursday.
• IMPACTS: Roads, 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

Remember, a Winter Weather Advisory means that there is at least an 80% chance of minor impacts due to winter weather conditions during the advisory period.