Polar vortex set to freeze U.S. as far as Deep South

The most unusually cold air in the Northern Hemisphere will be over the United States early next week, bringing dangerously ...
Snow and winds are likely to trigger flight cancellations and cause headaches for people traveling to DC for Inauguration Day ...
An arctic blast will send temperatures across the United States plummeting as bitterly cold air that originated in Siberia ...
The polar vortex is a ring of cold air that typically circles the Arctic. A strong jet stream essentially acts like a fence, ...
A polar vortex is currently hitting the United States, with schools closed in many areas and at least four deaths caused by ...
Americans face dangerously cold temperatures as a polar vortex brings life-threatening conditions. Nighttime lows may drop to ...
A polar vortex could cause light snow over the weekend in Knoxville. A polar vortex is to blame for freezing temperatures.
Storm Blair is expected to move through Ohio on Sunday, bringing snow and sleet accumulations of between 5 and 9 inches on ...