Monday's snowstorm hit southern Delaware the hardest, prompting days of closures and delays for schools and businesses. A polar vortex − a swirling mass of Arctic air typically contained over ...

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 ...

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 ...

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 ...

The jet stream is like a river of west-to-east winds in the upper atmosphere. Airplanes use it like a highway.

But that's not all; forecasts call for the coldest Arctic temperatures seen in years, in what's described as a polar vortex ... to impact the Philadelphia, Delaware and South Jersey areas.

As of Monday morning, about 34 million Americans are under winter storm warnings that span from Illinois to Mid-Atlantic states including New Jersey and Delaware ... the polar vortex of ultra ...

Winter storm warnings have been issued from western Kansas to the coastal states of Maryland, Delaware and Virginia ... According to forecasters, a polar vortex, an area of cold air that ...