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

The polar night jet, the high-altitude winter wind that circles the Arctic, acts like a flywheel for the cold season in the ...

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 ...

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.

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 ...

Another Arctic blast is on the move toward the U.S., bringing the potential for bitter cold and heavy snow accumulations to Michigan.

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

Forecasters are tracking new polar vortex changes that could reshape early December across the U.S. How will this affect ...

We are sliding closer toward winter, and many gardens are about to face their toughest challenge yet: surviving a polar vortex. And this ain't your typical heavy snowstorm or cold snap; for your ...

In recent years, the global climate has become increasingly extreme, with intensifying alternations of droughts and ...

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 ...