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

It's like "bomb cyclone" or "firenado." It seems like the sort of phenomenon that would be responsible for the ...

A strong polar vortex in the stratosphere has brought subzero temperatures to the Midwest, Mid-Atlantic and deep into the ...

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.” ...

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

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

A brutal polar vortex is set to bury the Big Apple in snow Sunday and then deliver deadly single-digit temperatures that will ...

We've already fallen as low as 1° this year. Another dip in the polar vortex makes that possible for Cincinnati again next week.

A developing area of upper-level arctic cold air will swing into much ... Sometimes, it can take longer than expected to snap out of a cold blast of air from the north. For now, relief comes ...

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

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 polar vortex, is forecast to bring subzero temperatures to the ...