A powerful winter storm is set to blast portions of the U.S. with heavy snow, cold temperatures, strong winds and rain just as millions of people across the country prepare to travel for Thanksgiving.

Multiple winter storm warnings have been issued across five different states, with some advising people avoid travel. Different parts of Oregon, Washington, Idaho, Wyoming and Montana are under winter storm warnings with heavy snow expected across all these states.

Whether rain or snow, the inclement weather at the start of the weekend across the Northeast does have the potential to snarl air and road traffic just as the Thanksgiving travel week gets

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.