Winter Storm Warning in Central and Southern Valley

Winter Storm Warning issued December 11 at 2:57AM MST until December 11 at 8:00PM MST by NWS Glasgow MT

• Event Start: 2025-12-11T02:57:00-07:00
• Event End: 2025-12-11T20:00:00-07:00
• Event Certainty: Likely
• Event Severity: Severe

Event Description

• WHAT: For the Winter Storm Warning, heavy mixed precipitation. Additional snow accumulations up to two inches and ice accumulations around one tenth of an inch. Winds gusting as high as 35 mph. For the Winter Storm Watch, heavy snow possible. Total snow accumulations between 3 and 8 inches possible.
• WHERE: Central and Southeast Phillips, Central and Southern Valley, McCone, and Northern Phillips Counties.
• WHEN: For the Winter Storm Warning, until 8 PM MST this evening. For the Winter Storm Watch, from late tonight through Saturday morning.
• IMPACTS: Travel could be very difficult. The hazardous conditions could impact the Thursday morning and evening commutes. Roads, and especially bridges and overpasses, will likely become slick and hazardous. Significant ice accumulation on power lines and tree limbs may cause widespread and long-lasting power outages.
• ADDITIONAL DETAILS: Temperature will fall sharply this afternoon, with wind chills reaching as low as 25 below zero tonight.

Event Instructions

Monitor the latest forecasts for updates on this situation. Persons should consider delaying all travel. Motorists should use extreme caution if travel is absolutely necessary. Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.

Winter Storm Watch in Central and Southern Valley

Winter Storm Watch issued December 11 at 2:57AM MST until December 13 at 11:00AM MST by NWS Glasgow MT

• Event Start: 2025-12-12T02:00:00-07:00
• Event End: 2025-12-13T11:00:00-07:00
• Event Certainty: Possible
• Event Severity: Severe

Event Description

• WHAT: For the Winter Storm Warning, heavy mixed precipitation. Additional snow accumulations up to two inches and ice accumulations around one tenth of an inch. Winds gusting as high as 35 mph. For the Winter Storm Watch, heavy snow possible. Total snow accumulations between 3 and 8 inches possible.
• WHERE: Central and Southeast Phillips, Central and Southern Valley, McCone, and Northern Phillips Counties.
• WHEN: For the Winter Storm Warning, until 8 PM MST this evening. For the Winter Storm Watch, from late tonight through Saturday morning.
• IMPACTS: Travel could be very difficult. The hazardous conditions could impact the Thursday morning and evening commutes. Roads, and especially bridges and overpasses, will likely become slick and hazardous. Significant ice accumulation on power lines and tree limbs may cause widespread and long-lasting power outages.
• ADDITIONAL DETAILS: Temperature will fall sharply this afternoon, with wind chills reaching as low as 25 below zero tonight.

Event Instructions

Monitor the latest forecasts for updates on this situation. Persons should consider delaying all travel. Motorists should use extreme caution if travel is absolutely necessary. Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.