NORFOLK, Va. — The plunging polarvortex brought subfreezing temperatures Tuesday to some of the southernmost points of the U.S., threatening to dump snow on parts of Texas and Oklahoma in the ...
The polarvortex is a long-established weather term ... To the west of that plunge, in California, it's hot and dry. But to the east and just above the dip, it's a taste of the North Pole.