When the polar vortex stumbles, the weather at ground level can pivot from mild to brutal in a matter of days. A circulation ...

The polar vortex is so back, and in some parts of the country, the weather system will bring with it up to a foot of snow. If “polar vortex” is giving you déjà vu, that’s because we’ve heard it before ...

Ready for some serious cold? The planet's most extreme cold air will be barreling into the central and eastern United States this coming weekend "like a wrecking ball," said Weather Trader ...

Something unusual may be brewing in the stratosphere, and meteorologists say it could change the course of the winter forecast. The atmosphere is at a "critical juncture," and what happens in November ...