Imagine the polar vortex as a giant, icy whirlpool far above the Earth, keeping frigid Arctic air contained near the north ...

This blast of cold weather is due to activity of the polar vortex.

ANNAPOLIS, Md. (AP) — A huge swath of the U.S. was blasted with ice, snow and wind on Monday as the polar vortex that dipped south over the weekend kept much of the country east of the Rockies ...

It’s the "Bleak Midwinter" in the Northern Hemisphere – so, in case you’ve been living under a well-insulated rock, cold ...

We start the following work week with a polar vortex. This will bring in unseasonably cold air to the region and wind chill ...

You’ve probably heard about the Polar Vortex in the news over the past few years and know that it is associated with very ...

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

The polar vortex is a large area of low pressure, winds, and cold air surrounding both of the Earth’s poles, according to the ...

A weaker jet stream becomes wavy and unstable, like a loose rope in the wind. This instability allows cold Arctic air from the polar vortex to spill southward into regions that usually enjoy ...