The coldest air of the season will descend across the U.S. this weekend and early next week, bringing subzero wind chills with it.
The coldest air of winter so far will have invaded much of the eastern two-thirds of the United States ... wind chills of 30 to 55 below zero at times Sunday into Tuesday,” the Weather ...
A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of the arctic blast.