The polar vortex is splitting — an exceedingly rare phenomenon for this time of year that will be an unusual driver of warmer temperatures, as the calendar flips to March and meteorological spring.

As the National Weather Service explains, the polar vortex is an area of low pressure and cold air that exists over both of Earth’s poles 10 to 30 miles above the surface. The term vortex is used to ...

Add Yahoo as a preferred source to see more of our stories on Google. Texas and the South and East will see extremely cold weather and a powerful winter storm with the possibility of snow and ice due ...

The extreme cold that has gripped much of the eastern United States this winter shows no immediate signs of relenting, as a significant disruption to the Polar Vortex is expected to occur later in ...

Snow and blowing snow will continue across Michigan as an Arctic cold front moves through the state. In the Upper Peninsula, ...

Folks in the central and eastern United States may be wondering: Is winter on the way out? Here's what meteorologists say.

WASHINGTON (AP) — Warm Arctic waters and cold continental land are combining to stretch the dreaded polar vortex in a way that will send much of the United States a devastating dose of winter weather ...

For folks who long for cold, the weeks after Thanksgiving might just be a tease for some intense Arctic cold that could arrive later in December.

Dangerously cold temperatures combined with wind gusts up to 60 mph are expected to cause life-threatening conditions across parts of the Midwest, Mid-Atlantic and Northeast to close out the week, ...

Every inch of Texas was impacted and eventually covered by a Winter Storm Warning. It was the coldest winter storm for Texas since December 1989.

The majority of the United States will experience chilling temperatures due to a blast of arctic air from Canada. The Midwest, Mid-Atlantic and Southern U.S. are expected to see below-freezing ...