Thanks to the polar vortex, the first half of December will bring multiple waves of Arctic air to the U.S. Here's what to expect in Tennessee.

Three rounds of cold Arctic air from a shifting polar vortex are expected to plunge much of the central and eastern U.S. into ...

As we head into the polar vortex, meteorologists are calling for up to a foot of snow in some parts of the U.S.

A strong polar vortex doesn't cause cold weather — it does the opposite. Here's what to know about polar vortices, how they work.

Can you feel the chill? Here is the news to know on Thursday.

Polar vortex will hit the U.S. with three waves of snow, extreme cold and storms. Will Mississippi weather feel the chill?

Parts of the Upper Midwest and Northern Plains are already feeling the effects of air spilling in from Canada. On Thursday, ...

Some light snow is possible across much of New Jersey on Friday night after an Arctic blast of much frigid air could ...

For folks who long for cold, the weeks after Thanksgiving might just be a tease for some intense Arctic cold that could ...

Another Arctic blast is on the move toward the U.S., bringing the potential for bitter cold.