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

A polar vortex is slated to sweep most of the continental US bringing winter storm warnings and a hazardous freeze to ...

A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of ...

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

Like much of the U.S., Wisconsinites woke up Tuesday morning to bitter cold conditions. Many schools and colleges throughout the Milwaukee area closed as the area braced for the dangerous freezing ...

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

This winter, the snow has not stopped falling ... Waterloo Region is about to get hit with the worst polar vortex seen in Ontario in over a decade, with the Weather Network predicting parts ...

Millions of people across the U.S. will experience subzero or below-average temperatures in the coming days as a polar vortex coming ... summer and strengthens in winter, often expanding and ...

What’s shaping up to be the most expansive polar vortex in over a decade is about ... into the coldest temperatures the country has seen all winter, meteorologists forecast.

The polar vortex is a gigantic, circular area of cold air high up in the atmosphere that usually spins over the north pole. It's a normal pattern that's stronger in the winter and usually tends ...

A dangerous and potentially life-threatening stretch of cold weather has much of the U.s. on alert as a lobe of the polar vortex invades ... s been a somewhat mild winter so far, but things ...