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

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

It's like "bomb cyclone" or "firenado." It seems like the sort of phenomenon that would be responsible for the ...

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

Arctic air has brought chilling temperatures as low as 12 degrees in New York City on Monday night but are we in a polar ...

Here's the latest on the winter storm. A historic winter storm is poised to produce potentially record-breaking snows from ...

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

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

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

Frigid temperatures are keeping snow on the ground in parts of the South as some cities in the North report dangerously low ...

These severe cold events occur when the polar jet stream – the familiar jet stream of winter that runs along the boundary ...

As a lifelong New Yorker, you'd think I'd be prepared whenever a polar vortex makes an unexpected appearance each winter. I'm ...