A "polar vortex" is sweeping down from the North Pole into the United States and as far south as the Gulf Coast, swathing much of the nation in an icy blanket that comes complete with life-threatening wind chills as low as minus-70 degrees.
Much of the midwest and New England is still digging out from the deadly snowstorm that blanketed states with several inches of snow, and left 16 people dead in its wake. But the super-chilled polar air that's set to start driving a wedge into the country on Sunday will put many people who remain snowed in into a deep freeze as well.
these promise to be temperatures not often seen beyond places like the North Pole or Siberia.
In Indianapolis and Chicago, temperatures are expected to go as low as minus-15 degrees. In Fargo, N.D., which is used to cold winter weather, the thermometer will plummet to 25 below zero, and in International Falls, Minn., the temperature is expected to go even lower, to 31 below zero.
The wind chill factor will make it feel like it's 50, 60, or even 70 degrees below zero
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Polar Air is heading to Chicago
Polar Air is heading to Chicago
Dan Steffens
Energy Prospectus Group
Energy Prospectus Group