Christmas has passed, but the weather outside is still frightful. A snowstorm hit Delaware last week and was followed by a ...

Thanks to the polar vortex, it feels like one, too. Why is it so cold? The Philadelphia region was hammered Monday by the ...

The National Weather Service in Mount Holly, New Jersey, is calling for 1 to 3 inches of snow throughout the state.

However, a deep freeze, thanks to the polar vortex dipping down from Siberia, is about to bring even harsher arctic blast to nearly 300 million Americans starting this weekend. Maps show where and ...

A polar vortex is currently hitting the United States, with schools closed in many areas and at least four deaths caused by ...

A lobe of the polar vortex, a stormy ring that typically keeps the coldest air locked up near the North Pole, will dip southward into the United States this weekend into next week. Polar air ...

Most of the U.s. enjoyed warmer air to end the workweek, but the warmup will be brief as a polar vortex will send temperatures tumbling below freezing for most of the nation starting this weekend.

Most of the US will enjoy milder temperatures on Thursday, but the warmup will be brief as a polar vortex will send temperatures tumbling below freezing for most of the nation starting this ...

Thanks to the polar vortex, it feels like one, too. Why is it so cold? The Philadelphia region was hammered Monday by the season’s first big storm, with some areas in Delaware and the lower ...