However, a deep freeze, thanks to the polarvortex dipping down from Siberia, is about to bring even harsher arctic blast to nearly 300 million Americans starting this weekend. Maps show where and ...
A lobe of the polarvortex, a stormy ring that typically keeps the coldest air locked up near the North Pole, will dip southward into the United States this weekend into next week. Polar air ...
Most of the U.s. enjoyed warmer air to end the workweek, but the warmup will be brief as a polarvortex will send temperatures tumbling below freezing for most of the nation starting this weekend.
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