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

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 ...

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

A strong polar vortex in the stratosphere has brought subzero temperatures to the Midwest, Mid-Atlantic and deep into the ...

Residents across the country from the Northern Plains to the tip of Maine are bracing for dangerously low temperatures ...

Another blast of winter weather is expected in parts of the U.S. in the coming days, including bone-chilling wind in the Northern Plains and unusual snow and ice in the Gulf Coast area.

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

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

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

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

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

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 ...