Add Yahoo as a preferred source to see more of our stories on Google. A displacement of the Polar Vortex will usher in days of Arctic cold through the end of January. The core of the Polar Vortex ...
The displacement of the polar vortex over the eastern half of the U.s. will usher in days of arctic cold through the end of January. The core of the polar vortex, which contains some of the coldest ...
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