A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of the arctic blast.

A strong polar vortex in the stratosphere has brought subzero temperatures to the Midwest, Mid-Atlantic and deep into the South.

According to the National Weather Service, a polar vortex will impact most of the country this weekend, here is what you need to know.

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Extreme cold and snow smacked the Gulf Coast states this week, but the polar vortex may not be to blame.

A brutal polar vortex is set to bury the Big Apple in snow Sunday and then deliver deadly single-digit temperatures that will feel like 15 degrees below zero.

The most unusually cold air in the Northern Hemisphere will be over the United States early next week, bringing dangerously frigid conditions.

It's a term you hear every couple of winters, when we get stuck in the coldest of cold patterns – polar vortex. But what exactly is it and how does it impact our weather? The polar vortex is ...

Arctic air has brought chilling temperatures as low as 12 degrees in New York City on Monday night but are we in a polar vortex? A polar vortex settled its way over New York City and New Jersey following Sunday’s snow storm,

The D.C. area is wrapped up in a polar vortex, and this cold weather can wreak havoc on your plumbing if you’re unprepared.

As a lifelong New Yorker, you'd think I'd be prepared whenever a polar vortex makes an unexpected appearance each winter. I'm no stranger to inches of snow leading to school closures. I've even battled below-zero temps to dance the night away at a wintertime birthday party or two.

A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of the arctic blast.