The polar vortex is a gigantic circular upper-air weather pattern in the Arctic that envelops the North Pole. It's a normal ...

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 ...

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

Erin Davis/Axios Visuals An invasion of frigid air from the Arctic is sweeping south from the Plains and Ohio Valley Sunday, moving towards the Southeast and East. Threat level: The ...

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

A brutal polar vortex is set to bury the Big Apple in snow ... where low visibility and snow accumulation on the field is likely. And the winter weather is not letting up yet.

A disruption in the polar vortex is about to send an Arctic air mass from Siberia as far south as Florida. Yes, Siberia—and ...

Cities across the U.S. are bracing for cold temperatures as a polar vortex arrives, bringing temperatures down ... create the ...

B.C., get ready to bundle up. The coldest air of the season will sweep into the province this weekend, courtesy of a polar vortex. It has been a relatively mild winter so far, so this drop in ...

A blast of Arctic air is set to cover much of the United States with temperatures below freezing starting on Friday and into next week, impacting millions of Americans in nearly all of the contiguous ...

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 ...