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

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

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 National Weather Service said that wind chill temperatures could dip into the teens to low-20s from Texas across the Gulf Coast.

A polar vortex is expected to bring snow and ice to 26 states and D.C., threatening travel with blizzard conditions and ...

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 ...

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Parts of all states in the Lower 48 woke up to subfreezing temperatures Tuesday due to a weather pattern that will keep arctic air in place across the eastern half of the country at least until the ...