Since the Ice Ages, the Polar Vortex has acted as a climatic gatekeeper. When breached, it unleashes freezing air into regions unprepared for it. This decade, those breaches are becoming more frequent ...

The term “polar vortex” might conjure images of mythical icy storms swirling through the North Pole but in reality it’s a ...

The polar vortex has taken on an unexpected pattern this winter — one that’s made part of the United States the most unusually cold place on the planet, at least so far this year. While the ...

Winter’s first polar vortex blast, already taking shape in the Arctic this weekend, targets the Lower 48 next week. By Tuesday, temperatures below zero will plunge south into the northern ...

Data from a polar vortex splitting during 2002’s Southern Hemisphere sudden warming event helps expand models to accommodate ...

The coldest air in a generation is spilling out across the US thanks to a breakdown in the polar vortex. The icy blast it’s sending southward is the biggest visitor from the North Pole since ...

Here's what you need to know about the polar vortex behind the deep freeze. The frigid air will come from a brief visit by the polar vortex — which is a real meteorological phenomenon ...

Harsh weather moved west on Monday as a polar vortex was expected to grip the Rockies and the northern Plains after winter storms pummeled the eastern U.S. over the weekend, killing at least 10 ...

A blast of brutally cold air - thanks to the polar vortex - is roaring across the central and eastern USA early this week, sending temperatures to levels not seen in 20 years. The polar vortex is ...