The coldest weather of the season to date will be due to a phenomenon called a polar vortex, an upper-level jet stream that ...

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 ...

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.

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 polar vortex that has hit much of the U.S. with ice and snow has dealt a glancing blow to Florida, dropping coastal ...

Inauguration Day for President-elect Donald Trump is under way as attendees have to face temperatures below freezing. Trump ...

For what it's worth, a polar vortex—a large region of low pressure ... Alas, we're in Chicago, where snow is de rigueur, so what are we even panicking about? We suggest you use this time to ...

What’s shaping up to be the most expansive polar vortex in over a decade is about to plunge much of North America, including nearly all of Canada, into the coldest temperatures the country has seen ...