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 ...

How the Polar Vortex Can Bring Arctic Blasts to the U.S. Vast weather patterns can carry blasts of frigid air far from the ...

The most unusually cold air in the Northern Hemisphere will be over the United States early next week, bringing dangerously ...

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

A polar vortex is hitting most of the country in the next few days. What does it mean? How to protect yourself and pets ...

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

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

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

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