A collapse in the polar vortex is letting Artic air come here. What that means, and why it happens.

It still feels summery in Mississippi with daytime highs in the 80s and relatively high humidity. But nights are getting a hint of a chill, and winter will be here before you know it. The polar vortex ...

A severe winter storm that brought crippling freezing rain, sleet and snow to a large part of the U.S. in late January 2026 ...

A Polar Vortex brought temperatures so cold in January 2014 that it froze Niagara Falls. Signals of a rare sudden stratospheric warming in the next two weeks have some forecasting an imminent Arctic ...

The Earth's polar vortex is stirring up, bringing the first hints at changing weather as fall descends on the U.S. This movement means gradual cooling and a more active storm track across the northern ...