Thanksgiving is forecast to be colder and snowier than usual across large swathes of the U.S., threatening to snarl what the ...

An unusually strong disruption in the upper atmosphere is setting the stage for a winter pattern that could lock much of the United States into bitter, prolonged cold. Forecasters are tracking a polar ...

A blast of polar vortex cold air is expected to hit parts of the country around Thanksgiving. What to expect in Tennessee.

For folks who long for cold, the weeks after Thanksgiving might just be a tease for some intense Arctic cold that could ...

Another arctic blast is on the move toward the U.S., bringing the potential for bitter cold and heavy snow accumulations to ...

The phenomenon, known as a sudden stratospheric warming, it's "the largest type of disruption that occurs to the polar vortex ...

Another Arctic blast is on the move toward the U.S., bringing the potential for bitter cold and heavy snow accumulations to ...

The phenomenon, known as a sudden stratospheric warming, it's "the largest type of disruption that occurs to the polar vortex ...

A harsh drop in temperatures is being delivered to the eastern two thirds of the U.S. thanks to a polar vortex dipping down ...

Forecasters have placed New York City, Long Island, and parts of New Jersey under a freeze watch as unseasonably bone-chilling temperatures are expected to blanket the East Coast early this week. A ...

A powerful polar vortex sweeping across the East Coast is set to bring bone-chilling, record-low temperatures to the Big Apple this weekend, giving the region a bitter first taste of winter, according ...