(CNN) — Holiday travelers in the United States avoiding widespread disruptive weather ahead of Thanksgiving might not be so fortunate during their post-holiday journeys.

A new storm that will first impact the Pacific Northwest on Thanksgiving night is expected to morph into a full-blown, cross-country storm with the potential to dump heavy rain and accumulating snow across more than 1,000 miles of the country this weekend.

The storm will also open the door for a new, colder rush of frigid Arctic air to send temperatures plummeting for millions right before the calendar flips to December.

A potent, quick-hitting winter storm is already causing issues for some travelers ahead of all this. Several inches of snow and strong winds have already hit parts of the Midwest and blizzard war

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