Prefer Newsweek on Google to see more of our trusted coverage when you search. A weakened polar vortex is allowing frigid air to spill into portions of the U.S. this week, forecasters say. The ...
Forecasters say that the polar vortex will usher in waves of frigid air across parts of the U.S. through January. The “more active polar vortex will drive colder air and snow across the central and ...
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