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

A dangerous and potentially life-threatening stretch of cold weather has much of the U.S. on alert as a lobe of the polar vortex invades the nation and ... limited to the Midwest and Plains.

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

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

A series of blasts of polar vortex air from the north will bring ... California and Oregon and as far south as Arizona, Texas and Alabama. For northern states, temperatures could drop to below ...

The NWS has issued the warnings as a powerful polar vortex continues to make temperatures plunge nationwide this week.

A blast of arctic air from Canada has brought the season's coldest weather to most of the United States. The system, known as ...

And if the polar vortex is to blame. First, a quick refresher on the polar vortex. The polar vortex is a region of very strong winds that form a circle around the North Pole. The vortex is located ...

An expanding polar vortex is expected to lower temperatures ... Virginia, North Carolina, South Carolina, Georgia, Alabama and Florida could record their coldest January in many years if the ...

The polar vortex of ultra-cold air usually spins around ... And in In Birmingham, Alabama, where temperatures fell below freezing, the Jefferson County coroner’s office said Wednesday that ...