Travel will be Affected by accumulating snow during a Winter Storm
Low Clark Fork Region is under a Winter Storm Warning from 11 PM this evening to 11 AM Sunday. Above 4000 feet, heavy snow is expected. Snowfall of 10 to 18 inches is more than 90 percent likely.
Valley areas will see snow accumulations of between 1 and 4 inches below 4000 feet. Several gusts of wind exceeding 40 mph. Snowfall rates are expected to be around one inch per hour Sunday morning. Temperatures near freezing are likely to lead to a decrease in snowfall rates on Sunday afternoon.
Clearwater Mountains Weather Advisory from 4 AM Sunday to 10 AM Monday. Amounts of 3 to 6 inches of snow are expected with isolated amounts as high as 8 inches.
The Kootenai/Cabinet region is under a winter weather advisory from 11:59 PM tonight to 11:30 AM Monday.
Libby, Eureka, and Whitefish might see snow accumulations ranging from 2 to 6 inches. Purcell Mountains saw an accumulation of 6 to 12 inches of snow, while Cabinet Mountains received 1 to 2 feet. Gusts of wind up to 40 mph.
West Glacier Region has a winter weather advisory from 11 PM tonight to 11 AM Monday. Areas in the valley will see snow accumulations of 2 to 5 inches.
Tonight’s lows Range from the high teens to the Mid-20s.
Glacier Park, the Whitefish Ranges, and the Swan Ranges experienced snow accumulations of 8 to 16 inches above 5,000 feet. High winds gusting to 45 mph.
Bitterroot/Sapphire Mountains are under a Winter Weather Advisory from 5 AM Sunday through 11 AM Monday. Normally, a three to six-inch accumulation is expected, but isolated higher amounts may occur.
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Forecast for winter weather in 2024-25 from NOAA
Throughout the Northern Rockies, we’re seeing widespread precipitation from a trough. Heavy snowfall is expected along I-90 over Lookout Pass as a result. Snow could fall at a rate of around 1 inch per hour through Sunday morning, making travel hazardous.
Snow levels are expected to rise above 4,500 feet tomorrow, especially south of Interstate 90. Snow impacts will remain at Lookout, Lolo, Marias, and Lost Trail Passes; however, the intensity will decrease.
Temperatures will Reach the low to Mid-40s.
Snow levels will drop quickly to around 2,000 feet by Monday morning, thanks to a cold front arriving Sunday night. Mountain passes will once again have winter driving conditions. You might see bursts of heavy snow, gusty winds, and poor visibility.
Snow squalls are also possible in southwest Montana near Anaconda and Butte.
Snow showers continue above 2,000 ft on Monday, accumulating from a trace to two inches of snow in valley locations like the Flathead Valley through the Bitterroot. The Lookout and Lolo passes have been affected by moderate snowfall.
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