A polar vortex collapse is set to freeze dozens of states and potentially bring snow two months before winter begins.

The polar vortex is an area of low pressure, a wide expanse of swirling cold air that is parked in polar regions, according ...

A "shocking" Arctic blast – with temperatures more akin to mid-January than early November – is poised to overspread the ...

The big winter (and popular) topic is dusted off very early this season as frigid air plunges south for Veterans' Day. But ...

Our first true shot of winter arrives late Sunday and spills into the first half of next week. I’m not talking about snow. Instead, a shot of Arctic air will plunge south into the United States from ...

The big winter (and popular) topic is dusted off very early this season as frigid air plunges south for Veterans' Day. But ...

The La Niña climate pattern has taken hold of the U.S. ahead of the start of meteorological winter, which forecasters say ...