Three rounds of cold Arctic air from a shifting polar vortex are expected to plunge much of the central and eastern U.S. into a cold snap in the coming weeks, meteorologists say. The first wave of the ...

A shifting polar vortex will send multiple rounds of Arctic air into the central and eastern United States through the first ...

The Upper Midwest and Northern Plains have been hit by Canada's freezing temperatures. On Thursday, Dec. 4, wind chills ...

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 polar vortex systems are anticipated in December, and the first is expected this week, according to AccuWeather. The ...

Some states are gearing up for subzero temperatures. Here's what to look out for.

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.

A polar air mass from Canada is hovering over Wisconsin on Tuesday, Dec. 3, bringing single-digit temperatures and negative wind chills.

Dr. Amy Butler with the National Oceanic and Atmospheric Administration says the early polar vortex disruption is unusual and ...

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

A new wave of intense winter weather is preparing to sweep across the United States, as meteorologists warn that a triple-dip ...