The polar vortex -- a towering mass of winter-chilled Arctic air -- has destabilized, and extreme cold is coming for the U.S. and Europe.

How the polar vortex could be linked to climate change 06:17. Forecasters say millions of people in the Midwest and Great Lakes will see record-shattering wind chills from 40 to 65 degrees below ...

Meteorologists are warning the band of frigid Arctic air known as the polar vortex could bring severe winter weather to much of the U.S. in the coming weeks. ... January 07, 2019. Jeremy Hobson ...

Updated Jan. 28, 2019. Want climate news in your inbox? ... That’s what happened at the beginning of January, when the polar vortex split into three separate bands.

The polar vortex is circulation of strong, upper-level winds that normally surround the North Pole. Learn how this cold air can spread to other parts of the world.

The polar vortex has become a popular phenomenon for good reason: ... In 2019, it's forecast to return during the last couple days of January. "This will be our second blast of it," said Weber.

A record cold snap in the US has left 21 dead. Here's what makes these polar-vortex events so dangerous and why we may see more of them in the future.

Temperatures are forecast to drop well below zero in the Midwest this week -- as cold as around minus-30. The only phenomenon frigid enough to generate that kind of chill is the polar vortex, of ...

Splits in the stratospheric polar vortex do happen naturally, ... Predicted daily mean, near-surface temperature (C) differences from normal (relative to 1979-2000) for Jan. 28-30, 2019.

The 2019 polar vortex brought historically cold temperatures across the Midwest and South on Wednesday. It's going to be frigid for the next few days, too. That means a lot of kids will be cooped ...

Michigan has frozen over — and the photos are stunning Polar vortex to give way to dramatic warm-up this weekend in Michigan Polar vortex 2019: How to keep your house safe and warm 8 things you ...