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

Winter is making its presence known in New York City, as the polar vortex is bringing brutally cold temperatures to the ...

"Intense lake-effect snow bands, which have pockets of rapidly rising air due to the sharp contrast between cold air aloft ...

Several Gulf states experienced a major snowstorm this week. Changes in global climate patterns can be connected to weird ...

The polar vortex's blast of Arctic air from Canada brought the season's coldest weather to the majority of U.S. The vortex is ...

Here's the latest on the winter storm. A historic winter storm is poised to produce potentially record-breaking snows from ...

A dangerous and potentially life-threatening stretch of cold weather has much of the U.S. on alert as a lobe of the polar ...

A rare winter storm is getting set to slam the Gulf Coast and South, with cities from Texas to Florida under Winter Storm Warnings.

According to the NWS, the Arctic polar vortex is a powerful band of west-to-east winds that develops in the stratosphere, about 10 to 30 miles above the North Pole, during the winter season. It is ...

The arctic blast is expected to affect millions of people across the United States with brisk winds, and dangerously cold ...

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 ...