A sudden stratospheric warming event that occurred March 4-8 is starting to show its effects, and its impacts will continue ...

Ohio and the Great Lakes are bracing for another cold shot later this month — down to single digits in places. When to expect more cold weather.

Welcome to 'false spring,' New Jersey! A polar vortex split could bring bitter cold back to NJ, but how cold will it get and when? The latest forecast ...

Welcome to 'false spring,' New York! A polar vortex split could bring bitter cold back to NY, but how cold will it get and when? The latest forecast ...

The United States is getting slammed by a stretch of weather extremes, from flooding rain to record heat and late-season snow ...

Folks across the central, eastern and southern U.S. are about to experience potentially record warmth over the next week or ...

Winter weather is back in the East, but the extended forecast has some good news for milder weather later in March.

In the wake of the historic winter storm that blasted 40 states this weekend, a dome of Arctic air associated with the Polar Vortex is bringing days of life-threatening temperatures to much of the ...

The infamous weather pattern is actually partly influencing our weather as February ends. And it may again throughout the ...

Polar vortexes are a year-round phenomenon. But Chicago-area residents only notice them when they collapse, experts say. That’s what’s happening starting Thursday when dangerously frigid air from ...

CHICOPEE, Mass. (WWLP) – Scientists are investigating whether a warming Arctic is changing the behavior of the polar vortex, a natural atmospheric phenomenon responsible for recent waves of intense ...

Florida has experienced an unusually cold winter with multiple Arctic blasts due to a weakened polar vortex. Another major, widespread freeze in Florida is unlikely for the remainder of the winter ...