Heavy Snow in the Sierra Nevada; Heavy Rainfall in Texas Sunday

Heavy snow is expected in the Sierra Nevada mountain ranges into Saturday causing hazardous travel conditions. Winter Storm Warnings have been issued. Thunderstorms and moderate to heavy rainfall are expected across portions of eastern Texas into Louisiana on Sunday. Read More >

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Last Map Update: Fri, Nov 13, 2026 at 4:50:13 pm MST

Watches, Warnings & Advisories

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National Weather Service Great Falls, MT

Dense Fog Advisory

Wind Advisory

Cooler and Unsettled Next Week

Possible Fog and Stratus Through Weekend

A weather system will bring a pattern change with cooler temperatures and falling snow levels through Wednesday of next week. First a slow moving front will bring snow down to 5000 feet over north-central Idaho on Monday. Secondly, a Yellowstone low pressure system will bring wrap-around rain and snow generally to areas south of Interstate 90 Tuesday into Wednesday(70% chance). Temperatures will be near normal for this time of year. These types of weather systems can bring a wide range of snow levels depending on the intensity of the precipitation. Right now, the lowest snow levels could range from 1500 to 4000 feet. Mountain pass travel may be slick at times.

Strong valley inversions will bring a chance of fog and low stratus to the Northern Rockies from through Monday Nov. 15. Areas across North-central Idaho and Western Montana valleys—including major routes like I-90, US-93, US-2, US-12, US-95, MT-200, MT-83, and MT-56—may experience localized travel hazards caused by low visibility and icy road surfaces from freezing fog. Allow extra travel time and use low-beam headlights when driving through valley fog.

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Heavy Snow in the Sierra Nevada; Heavy Rainfall in Texas Sunday

NWS Forecast Office Missoula, MT