Over the next 10 days, scientists say, changes in the stratosphere will upend weather patterns and set the stage for a cold, snowy December across parts of the Northern Hemisphere.

Meteorologists have recently noticed a strange kind of winter pattern. Researchers at NOAA found that parts of the atmosphere are lining up in ways that they haven’t spotted for many decades. These ...

A strong polar vortex doesn't cause cold weather — it does the opposite. Here's what to know about polar vortices, how they work.

Early-season stratospheric warming events spark hype around frigid temperatures. Learn the myths and the science about the ...

Despite a warming climate, bone-chilling winter cold can grip parts of the U.S. In a study appearing in Science Advances, researchers found that two specific patterns in the polar vortex, a swirling ...

The phrase "polar vortex" has captured public attention and is now often misused to describe short-term bouts of frigid ...

The Upper Midwest and Northern Plains have been hit by Canada's freezing temperatures. On Thursday, Dec. 4, wind chills ...

Bitingly cold Arctic air keeps pummeling the U.S. with ruthless cold snaps—despite warming winters nationwide. A study explains why: the solution lies far above your head, in the upper atmosphere ...

🥶 HERE COMES WINTER: Cold weather and snow on the way for some areas of the US, but how will global weather patterns - like a La Niña or polar vortex - factor into an early winter? FOX Weather digs ...

An Arctic blast could bring freezing temperatures and heavy snow to Kentucky around Thanksgiving weekend. A "sudden stratospheric warming" event may disrupt the polar vortex, potentially causing ...