The Arctic’s refrigerator door is about to open, spilling frigid air into the U.S. for Christmas

December 18, 2017 Posted By: admin Leave a comment

If you're planning on celebrating Christmas in the Upper Midwest or the Dakotas this year, you're going to need to get a thicker coat.

A true Arctic air mass — the coldest of the season so far — is projected to swirl down from...