Anytime we get an Arctic air blast down this far south, this is an artifact of the polar vortex rearing its ugly head,” said climatologist Barry Keim .

The cold temperatures are coming from a not uncommon expansion in the Polar Vortex, which are counter-clockwise rotating air ...

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

Warmer-than-normal temperatures in the Gulf of Mexico did not cause the record-setting snowfall, but the conditions may have been an ingredient to the unusual weather.

Abnormal weather events and severe winter storms could be caused by a disrupted polar vortex. Find out here how the polar ...

The first-ever blizzard warnings were issued near the Texas-Louisiana border Tuesday as Winter Storm Enzo blew through, ...

People living "basically anywhere from the Rockies eastward" will see extremely cold temperatures over the next several days, ...

NEW ORLEANS -- The vast majority of Americans are about to get an extended taste of frigid Siberian weather. Another polar ...

A mass of air called the polar vortex has escaped the Arctic and plunged southward. Some scientists see the fingerprints of climate change.

A rare winter storm has turned the South into an unlikely winter wonderland this week, giving cities like New Orleans more ...