WINTER STORM WARNING FOR Marias Pass, Lookout Pass, and their surrounding areas until 5.a.m. Wednesday. Winds gusting to 35 mph and heavy snow will cause whiteout conditions in these areas. Lookout Pass will see up to 15 inches by early Wednesday while Marias will see up to 10. Nearby communities like Haugan, Essex, Polebridge, and West Glacier should see 3 to 7 inches of snow.
Lolo and Lost Trail Passes will see between 8 inches and a foot of snow during this timeframe. Other areas such as Libby, Troy, Noxon, Thompson Falls, Plains, Eureka, Lolo Hot Springs, and Sula should see between 3 and 7 inches of snow and are under Winter Weather Advisories.
For our larger valleys the story is a bit more complicated. High winds will impact travel with blowing and drifting snow in southwest Montana while the very same wind may keep places like Missoula and Kalispell dry for a large section of Tuesday. Expect 2 to 4 inches in the Flathead and Mission Valleys as winds taper off a bit and snow bands begin to form Tuesday afternoon. This could also bring snow to the Missoula and Bitterroot Valleys with 1 to 3 inches of accumulation.
Butte and Bozeman won't see a whole lot of snow, 1 to 2 inches, but a WINTER WEATHER ADVISORY is in effect due to hazardous blowing and drifting snow with wind gusts over 40 mph possible through Wednesday morning.Mountain areas such as Monida Pass and West Yellowstone will get 3 to 8 inches of snow during this timeframe. High wind warnings and wind advisories are also in place between Bozeman and Billings and for most of Central Montana over the next couple of days.