These severe cold events occur when the polar jet stream – the familiar jet stream of winter that runs along the boundary ...

This blast of cold weather is due to activity of the polar vortex.

It's going to get cold in Tennessee. Meteorologists predict freezing temperatures for much of the state. Here's the latest.

Cities across the U.S. are bracing for cold temperatures as a polar vortex arrives, bringing temperatures down to much below ...

The polar vortex is always around. It is a channel of strong winds high up in the atmosphere that circles the poles. One over ...

Imagine the polar vortex as a giant, icy whirlpool far above the Earth, keeping frigid Arctic air contained near the north ...

A rush of Arctic air will plunge parts of North America into bitter cold this weekend, bringing heavy snow, strong winds and ...

DALLAS - Most of the nation is in good shape on Wednesday and will be warmer on Thursday. The arctic air is coming, but not ...

Americans were bracing Thursday for frigid temperatures that forecasters said could produce life-threatening conditions, with ...

The mere mention of the term "polar vortex" can set your head spinning (and maybe eyes rolling). It’s got to be clickbait, ...

The polar vortex is a large area of low pressure, winds, and cold air surrounding both of the Earth’s poles, according to the ...

Our next outbreak of bitterly air will arrive next week, plunging temperatures well below average for a time. But where does this cold air come from? It has an Arctic origin near the North pole! A ...