A polar vortex, a massive pocket of frigid air that ... temps south and impact up to 40 states across the U.S., including Delaware, meteorologists with AccuWeather said. The National Weather ...

Christmas has passed, but the weather outside is still frightful. A snowstorm hit Delaware last week and was followed by a polar vortex dropping freezing temperatures in the region. The weather isn't ...

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 ...

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

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

That will be followed by a polar vortex that will cause temperatures ... and impact up to 40 states across the U.S., including Delaware, meteorologists with AccuWeather said.

A new year brings a new winter storm for Delaware and other parts of the U.S. that likely ... That will be followed by a polar vortex that will cause temperatures to drop next week. With the season's ...