Seven winter weather advisories are currently active in Montana, mostly concentrated in the southeastern reaches of the state. Several inches of snow are forecast across the area, with the highest amounts of up to 10 inches anticipated along the Highway 12 Garrison to Elliston, as well as Georgetown Lake, MacDonald Pass and Homestake Pass.

On Saturday at 2:42 a.m. a winter storm warning was issued by the National Weather Service valid from Sunday 10 a.m. until Monday 10 p.m. for East Slopes of the Oregon Cascades.

It's already been a chilly week for the West Coast, with two storm systems traveling in from the Pacific Ocean, bringing snow, freezing rain and bitter temperatures. That's unlikely to abate in the coming two days for four West Coast states, with similar hazardous conditions expected in parts of the Northeast as well.