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

A polar vortex is slated to sweep most of the continental US bringing winter storm warnings and a hazardous freeze to ...
The polar vortex is a ring of cold air that typically circles the Arctic. A strong jet stream essentially acts like a fence, ...
Some areas of the U.S. may see temperatures as low as -20 or -30 degrees early next week as arctic air from Siberia rolls in.
A brutal polar vortex is set to bury the Big Apple in snow Sunday and then deliver deadly single-digit temperatures that will ...
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 ...
Another blast of winter weather is expected in parts of the U.S. in the coming days, including bone-chilling wind in the ...
Snow is expected to taper off around Denver by the early afternoon, while temperatures will remain well-below freezing ...