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

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

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 has triggered freeze warnings and advisories across Texas, threatening human safety and infrastructure.

The plunging polar vortex brought subfreezing temperatures Tuesday to some of the southernmost points of the U.S., ...

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 ...