A polar vortex is currently hitting the United States, with schools closed in many areas and at least four deaths caused by ...

The polar vortex of ultra-cold air usually spins around the North Pole, but it sometimes plunges south into the U.S., Europe ...

But, today, it’s all about the cold. Temperatures plunged into the teens and single digits in some spots, and the snow-dusted ...

The United States continued to freeze through a polar vortex that brought rare cold to the southern United States and chances ...

In Indiana, the National Guard was activated to help stranded motorists. The storm was expected to reach the Mid-Atlantic ...

A huge swath of the United States was blasted with ice, snow, and wind on Monday as the polar vortex that dipped south over ...

It's a term you hear every couple of winters, when we get stuck in the coldest of cold patterns – polar vortex. But what exactly is it?

The polar vortex is a low-pressure system of cold air that swirls above Earth’s poles. There’s one over the South Pole in ...

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

Parts of all states in the lower 48 woke up to subfreezing temperatures Tuesday due to a weather pattern that will keep ...

A huge swath of the U.S. was blasted with ice, snow and wind on Monday as the polar vortex that dipped south over the weekend ...