The first of three rounds of bitter air has arrived, threatening record lows in cities from the Midwest to the Northeast.

If you hear that the polar vortex is coming, you should expect to experience a lot of cold. CLEVELAND — The temperature ...

Three rounds of cold Arctic air from a shifting polar vortex are expected to plunge much of the central and eastern U.S. into ...

Arctic air is creating chilly conditions for millions of Americans out shopping on Black Friday, as another shot of even ...

SEATTLE — The weather across the nation is going to extremes. While Western Washington is several days in a row of relative sunshine and above average temperatures, the eastern half of the nation is ...

In an early sign of the winter weather that's coming, the dreaded polar vortex is making news yet again. The polar vortex is "ramping up from its summer slumber," said meteorologist Judah Cohen in an ...

15 states are under winter storm warnings and freeze warnings due to a powerful polar vortex sweeping large swaths of the country. The polar vortex has led to freezing temperatures, snowfall, and ...

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