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

Three separate rounds of Arctic air have already swept across the central and eastern United States through mid-December, ...

BUT LET’S TALK ABOUT THE POLAR VORTEX HERE. SO IT’S REALLY AN AREA OF COLD AIR THAT’S TRAPPED AROUND THE ARCTIC. AND IT’S JUST GOING TO IT USUALLY JUST STAYS PUT THERE. BUT WHEN IT WEAKENS, THAT JET ...

Those struggling with high heating bills due to relentless cold and sore backs from shoveling snow in the Midwest and ...

What is sudden stratospheric warming? Sudden Stratospheric Warming (SSW) events occur during the winter months and can lead to Arctic outbreaks across the US. They have to do with the polar vortex and ...

Thanks to the polar vortex, the first half of December will bring multiple waves of Arctic air to the U.S. Here's what to expect in Tennessee.

Three polar vortex systems are anticipated in December, and the first is expected this week, according to AccuWeather. The ...

High above the North Pole, in a slice of atmosphere rarely noticed and even less understood, a transformation is underway. Over the next 10 days, changes in the stratosphere will upend weather ...

Feeling that sudden chill? A triple polar vortex is sweeping across parts of the U.S. Here’s what that means — and where it’s hitting. Well, that depends on where you live. A blast of Arctic air is ...

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 ...

The polar vortex is a big swirl of cold air that usually stays locked over the Arctic, but when it weakens, the jet stream can dip south. This week, that jet stream plunge will send frigid air into ...