The vortex appears to be part of a huge filament of solar plasma that the space agency says broke away from the Sun’s surface and is now circling the north pole like a tornado. Unfortunately ...

It is a normal pattern that is stronger in the winter and keeps some of the coldest weather bottled up near the North Pole. But at times some of the vortex can break off or move south, bringing ...

The polar vortex, a band of strong winds that circles the North Pole, will send a blast of arctic air to Texas. The good news is the center of the polar vortex is staying in Canada. It is not ...

More than 95 million people in the U.S. are facing gripping cold Tuesday as a polar vortex sends temperatures ... air that usually stays near the North Pole into the U.S. and Europe.

I'm Mimi Kiley reporting. The term "polar vortex" usually refers to the gigantic circular upper air weather pattern in the Arctic region. It is a normal pattern that is stronger in the winter and ...