Polar vortex expected to bring 'dangerously' low temps to U.S.
Tuesday, December 13, 2016 - 01:31
in Astronomy & Space
Stephen FellerWASHINGTON, Dec. 12 (UPI) -- The Polar Vortex is expected to stretch south from the Arctic and is expected to send a blast of freezing air across the midwest and northeast by mid-week.