As U.S. shivered through polar vortex, one state was unusually warm
Ranked dead last, or perhaps not mentioned at all, would probably be the only state that sits partly within the Arctic Circle ...
A polar vortex has brought arctic air to the U.S. including DC area
WASHINGTON — We are in the middle of a blast of extreme cold weather in D.C. The polar vortex has shifted, spilling cold air ...