The polar vortex's blast of Arctic air from Canada brought the season's coldest weather to the majority of U.S. The vortex is ...

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

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

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

Extreme cold and snow smacked the Gulf Coast states this week, but the polar vortex may not be to blame.

Frigid air that normally stays trapped in the Arctic has escaped, plunging deep into the United States for an extended visit ...

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 ...

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

Florida is officially out snowing several Canadian cities on a monthly level, too, beating out places like Toronto, Ont., and St. John's, Nfld., with their January monthly snow totals so far. As of ...

The polar vortex, a band of strong winds that circles the North Pole, will send a blast of arctic air to Texas. The good news is the center of the polar vortex is staying in Canada. It is not coming ...

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