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

As the cold front moved southward Tuesday, it prompted a cold weather advisory for the Gulf Coast and pushed temperatures ...

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?

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

Winters are getting warmer across New England, that we know. So when we do get a frigid blast of subfreezing weather like ...

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

Polar vortex brings subfreezing temperatures, snow to southern U.S., causing power outages and travel disruptions.

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

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 ...