Every state but Hawaii, California and Florida is likely to get a taste of wind chills of 20 degrees or colder.

After a winter storm this weekend, the polar vortex will return, bringing subzero temperatures to around 80 million people ...

The latest arctic blast will move into the northern Rockies and northern Plains Saturday and spread to the central and ...

We are tracking the return of the polar vortex next week as a wavy jet stream brings a blast of Arctic air to the Great Lakes ...

A strong, stable vortex is like a skater spinning with their arms tucked closely in, holding in an area of cold air over the ...

A big reason is we have another lobe of the Polar Vortex that is going to shift south into far southern Canada. This lobe of ...

Ben Noll, The polar vortex is coming back. After a half-month hiatus, frigid air will again surge across the United States ...

According to the Severe Weather Europe website—an online resource of global weather forecasts—a mass of cold air, spurred by the polar vortex, has been forecast to move over Canada and the northern ...

Polar vortex is not a synonym for “cold snap ... Until temperatures reach a point that it’s too warm to snow, a warmer winter atmosphere will hold more moisture, Simpson said.

Meteorologist Sven Sundgaard is in with a look at cold temps hanging around for a while plus the latest on where Friday snow is tracking.