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 ...

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

Some areas of the U.S. may see temperatures as low as -20 or -30 degrees early next week as arctic air from Siberia rolls in.

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

Over the next two weeks of this year, around 120 million people are forecast to experience that level of cold. The polar vortex, a ring of frigid air typically located near the North Pole ...

Winter is making its presence known in New York City, as the polar vortex is bringing brutally cold temperatures to the ...

“Like, really, really far south.” The potentially life-threatening cold is due to a disrupted polar vortex. The FOX Forecast Center said a lobe of the polar vortex will dip to the south and ...

Most of the U.S. will enjoy milder temperatures on Thursday, but the warmup will be brief as a polar vortex will send ...

Stable polar vortex: When the stratosphere over the Arctic is cold, it's considered stable. The wind around the polar vortex ...

Abnormal weather events and severe winter storms could be caused by a disrupted polar vortex. Find out here how the polar ...