As the U.S. prepares to take on another bout of cold weather, the term "polar vortex" is getting thrown around. But what is ...

A snowstorm and harsh winter weather have impacted at least 177 million people across the US, with several Northeastern and ...

Meteorologists warn that a stretched polar vortex could bring severe winter weather to much of the United States.

A chilling polar vortex is set to bring snow and ice to the South and East this week. We show where.

Starting Thursday, dangerously frigid air from Siberia and the North Pole is forecast to plunge the Great Lakes region into ...

The big winter (and popular) topic is dusted off very early this season as frigid air plunges south next weekend. But what is ...

As a winter storm approaches Western North Carolina and other regions, here's what to know about deciphering forecaster terms ...

The meteorologists said the polar vortex system is set up due north of Michigan over Canada's Hudson Bay. It's at least ...

What travelers should know as a polar vortex heads towards the United States, including how airlines and hotels are responding, and experts on whether you should cancel your trip.

A polar vortex is expected to bring two surges of extremely cold air to the U.S. in January. Here's what to know in Middle ...

It exists all the time, but it usually gets stronger in winter. When the jet stream (a river of wind) bends and dips south, ...

National Weather Service Binghamton has issued a hazardous weather outlook for the area as the polar vortex approaches.