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.

Right now, we don’t have any signs of extremely bizarre, warm weather. We don’t need that either in Michigan. Too much warmth ...

A rare and disruptive atmospheric event may soon unfold, raising the prospect of significant weather shifts across the U.S.

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 ...

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DC swings from a warm 50 weekend to a cold start to the week, with highs in the 30s and a wintry mix as the polar vortex and ...

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

Major cities across the Northeast and Midwest are facing temperatures 10-20 degrees below average, according to forecasters.