Winter Storm Warning in Southwestern Yellowstone

Winter Storm Warning issued December 11 at 2:22AM MST until December 12 at 8:00PM MST by NWS Billings MT

• Event Start: 2025-12-11T17:00:00-07:00
• Event End: 2025-12-12T20:00:00-07:00
• Event Certainty: Likely
• Event Severity: Severe

Event Description

• WHAT: Heavy snow expected. Total snow accumulations between 4 and 9 inches, greatest north and east of Columbus. Winds gusting as high as 35 mph.
• WHERE: Portions of south central and southeast Montana.
• WHEN: From 5 PM this afternoon to 8 PM MST Friday.
• IMPACTS: Travel will be very difficult with slick and snow covered roads, and areas of poor visibility.
• ADDITIONAL DETAILS: Rapidly falling temperatures combined with rain changing to snow may result in a flash freeze on roadways late this afternoon and evening. Travel may become treacherous during this time.

Event Instructions

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For the latest road conditions, call 5 1 1.