OFFICIAL · Severe weather

Winter Storm Warning issued October 11 at 11:30PM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT

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Observed Oct 12 2026, 05:30 UTC · Updated Oct 12 2026, 05:31 UTC

* WHAT...Heavy snow. Additional snow accumulations up to two inches. Winds gusting as high as 40 mph. * WHERE...Helena Valley, Gallatin Valley, Madison River Valley, and Missouri Headwaters. * WHEN...Until 6 AM MDT Monday. * IMPACTS...Travel could be very difficult. The wet and heavy nature of the snow could bring down tree branches. Isolated power outages are possible. 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.

Location 46.669, -111.971. ARC Warning did not create the underlying report.

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