National Weather Service current warning:

Difficult to Impossible Travel across Wide Swaths of the U.S.

Powerful storms that stretch from coast to coast will bring widespread areas of snow and blowing snow to low elevations in the West Coast and to the Great Lakes. Blizzard to near-blizzard conditions can be expected. Strong winds across the Southwest will keep fire weather threats critical in the South Plains. Thunderstorms, some severe, may produce localized flash flooding in the Midwest.[1]

[1] (bad capture by archive.is. NWS changes the content at that URL and archive.is shows an old one from last month.)