The polar vortex is about to bring a wild weather pattern change

Over the next 10 days, scientists say, changes in the stratosphere will upend weather patterns and set the stage for a cold, snowy December across parts of the Northern Hemisphere.

Record-breaking cold settles in across the southern US, but another big change is coming

Chicago is facing a dangerous lake-effect snow event overnight Sunday into Monday morning. A narrow, but extremely intense ...
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Over a foot of snow piles up in the Great Lakes as Arctic blast spreads across much of the US

Intense lake-effect snow is creating dangerous travel conditions in the Great Lakes and it’s all being fueled by a record ...

CNN explains where you could see the Northern Lights

Tuesday’s geomagnetic storm lit up skies across the US with dazzling auroras. Another wave could bring the show back tonight.