It's like "bomb cyclone" or "firenado." It seems like the sort of phenomenon that would be responsible for the ...

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 ...

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 ...

Anytime we get an Arctic air blast down this far south, this is an artifact of the polar vortex rearing its ugly head,” said ...

Like the jet stream, the polar vortex spins around the earth from west to east. This is caused predominately by the Earth's rotation. Smaller-scale atmospheric disturbances can cause it to reverse ...

A mass of air called the polar vortex has escaped the Arctic and plunged southward. Some scientists see the fingerprints of ...

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 could cause light snow over the weekend in Knoxville. A polar vortex is to blame for freezing temperatures.

which causes a powerful jet stream to emerge in the stratosphere and blow the cold air from west to east. This strong circulation is known as a polar vortex. This story was updated to fix a typo.