OFFICIAL · Severe weather

Winter Weather Advisory issued October 11 at 10:29AM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT

Observed Oct 11 2026, 16:29 UTC · Updated Oct 11 2026, 16:31 UTC

* WHAT...Snow. Additional snow accumulations between 2 and 4 inches across lower elevations, with up to 7 inches in the mountains. Winds gusting as high as 35 mph. * WHERE...Canyon Ferry Area, Beaverhead and Western Madison below 6000ft, Gallatin and Madison County Mountains and Centennial Mountains, Northwest Beaverhead County, and Ruby Mountains and Southern Beaverhead Mountains. * WHEN...Until 6 AM MDT Monday. * IMPACTS...Travel could be difficult. Gusty winds combined with the wet and heavy nature of the snow could bring down tree branches. Isolated power outages are possible. * ADDITIONAL DETAILS...Snowfall amounts will vary drastically from grassy surfaces to roadways, most notably at lower elevations, with accumulations on non-grassy surfaces being confined mainly to between the evening through late morning hours. Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.

Location 46.330, -111.558. ARC Warning did not create the underlying report.

Sources

• OFFICIAL

  nws

  Winter Weather Advisory issued October 11 at 10:29AM MDT until October 12 at 6:00AM MDT by NWS Great Falls MT

  Oct 11 2026, 16:29 UTC

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