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

Thanksgiving is less than a week away which means the fall season is ending. With it comes colder temperatures from an ...

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

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

Storms, some of which may bring snow, are expected to accompany a push of colder air this week, and the next storm is ...

Forecasters have said parts of the U.S. can expect frigid temperatures in December. A first round has arrived, and more cold ...

An arctic blast is on track to bring freezing temperatures to central and eastern states.

How colder air interacts with a developing storm will determine if and where a band of snow or a mix forms from the ...

In yet another sign that winter weather is either here or will be soon, the dreaded polar vortex is making news yet again. Its potential arrival in the United States over the next few weeks is cause ...

High above the North Pole, about 10 to 30 miles above Earth’s surface, sits a massive whirlpool of icy air known as the polar ...