WINTER STORM WARNING through early Sunday for Sanders,and Lincoln Counties along with Glacier Park. A warning is also in effect for mountain passes in Beaverhead, Madison, and Gallatin Counties. Snowfall of 8 to 12 inches in the valleys and 12 to 18 inches in the mountains.
WINTER WEATHER ADVISORY through Sunday for the rest of western Montana. This includes Missoula, Kalispell, Butte and Bozeman. Snowfall of 2 to 5 inches in the Flathead Valley, 1 to 3 inches in the Missoula and Bitterroot Valleys and 2 to 4 inches in the Butte area. The mountains will receive 6 to 12 inches of snow. The Bozeman area will receive 1 to 3 inches with 4 to 8 inches in the mountains. The best chance of valley accumulations is Saturday afternoon through early Sunday. Locally heavier snow will be possible.