Much below normal temperatures should persist across the eastern U.S. into early February before moderating slightly.

Much of the nation east of the Rocky Mountains is hunkered down for what could be the worst winter storm of the season.

Meteorologist Sven Sundgaard predicted this wacky winter weather back in October, and he explains what's happening now and ...

Deep penetration of cold temperatures and a coastal storm will bring bomb cyclone and polar vortex into your newsfeeds.

What is the polar vortex? This article explains what a polar vortex is in simple terms, how it influences winter weather in ...

A severe winter storm that brought freezing rain, sleet and snow to a large part of the U.S. was intensified by the polar ...

Despite being notorious for bringing brutal cold and dangerous wind chills, the polar vortex has a surprising upside.

Ben Gelber, a meteorologist for NBC4 in Columbus, Ohio, and a Pocono native, said the polar vortex is a large, circular pool ...

Rising Arctic temperatures and melting sea ice could be causing cold air to flow into the Northern Hemisphere. But not all ...

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

Every year, the winter buzzwords start to fly before we set the Thanksgiving table. And who doesn't love feasting on the polar vortex? Everyone's favorite (or favorite to hate) phenomenon spins up in ...

The throughline is unpredictability at The Foundry this Valentine's Day season, as slink g moss's "Valentine Vortex" Feb. 7 and the "Anti-Valentine's Show" Feb. 13 with Cady Huffman and Mary ...