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

An arctic blast will send temperatures across the United States plummeting as bitterly cold air that originated in Siberia ...

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

Extreme cold and snow smacked the Gulf Coast states this week, but the polar vortex may not be to blame.

A blast of arctic air from Canada has brought the season's coldest weather to most of the United States. The system, known as ...

A series of disturbances in the atmosphere is sending the polar vortex south (again) next week with a burst of even colder ...

Perfect time to hop on a plane and go somewhere south,” FOX Weather Meteorologist Britta Merwin said. “Like, really, really far south.” ...

An Arctic blast that began in the northern plains on Saturday spread bitter cold from the Rockies through the East Coast and ...

Most of the U.S. will enjoy milder temperatures on Thursday, but the warmup will be brief as a polar vortex will send ...

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

A series of cold fronts the last few weeks has kept Florida downright chilly, as another winter storm starts to take aim this ...

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