Research has found that rising temperatures in the Arctic are weakening weather systems that normally trap the cold around ...

A strong polar vortex in the stratosphere has brought subzero temperatures to the Midwest, Mid-Atlantic and deep into the ...

These severe cold events occur when the polar jet stream – the familiar jet stream of winter that runs along the boundary ...

How the Polar Vortex Can Bring Arctic Blasts to the U.S. Vast weather patterns can carry blasts of frigid air far from the ...

A polar vortex is currently hitting the United States, with schools closed in many areas and at least four deaths caused by ...

The polar vortex can be a powerful source of winter weather, but it's not the only cause of severe cold and snow in regions better known for warmth and sunshine. The Gulf Coast states are still ...

First, a quick refresher on the polar vortex. The polar vortex is a region of very strong winds that form a circle around the North Pole. The vortex is located in the stratosphere, the layer above ...

Research has found that rising temperatures in the Arctic are weakening weather systems that normally trap the cold around ...

What is the polar vortex? The polar vortex, or Arctic polar vortex, is a ring of strong westerly winds that form between 10 and 30 miles (16-48km) above the North Pole every winter, enclosing a large ...

During winter, the polar vortex at the North Pole can loosen up and expand, sending cold air south and causing outbreaks of chilling cold weather into the U.S. The worst of the cold temperatures ...