"The large polar vortex disruption from the second week of March is playing a key role in next week’s eastern US cold snap," meteorologist Judah Cohen of Atmospheric and Environmental Research told ...

This stability helps keep the polar vortex — and all its bitterly cold air — locked up in the Arctic, far from places like ...

A sudden stratospheric warming event reversed the winds that make up the northern polar vortex on March 9. A new animation shows the vortex also moved away from the Arctic towards Europe.

The cause of the week-long deep freeze? A polar vortex collapse. Now, meteorologists are calling for another collapse in the middle of March, one that could plunge the U.S., Canada, and parts of ...

"The large polar vortex disruption from the second week of March is playing a key role in next week’s eastern US cold snap," meteorologist Judah Cohen of Atmospheric and Environmental Research told ...

It’s tough to trudge through a Canadian winter without hearing about the polar vortex, that circulation surrounding the Arctic that occasionally sends bouts of frigid temperatures surging southward.

BISMARCK, N.D. (AP) — Harsh cold descended on the nation’s midsection Monday as a polar vortex gripped the Rockies and Northern Plains on the heels of weekend storms that pummeled the ...

The polar vortex slid toward Europe in recent weeks, ushering in cooler temperatures to portions of Canada A significant disruption to the polar vortex over far Northern Canada will keep the ...

A sudden stratospheric warming event reversed the winds that make up the northern polar vortex on March 9. A new animation shows the vortex also moved away from the Arctic towards Europe.

Don't put away those winter coats just yet. An April cold snap is forecast for much of the eastern half of the U.S. early next week, forecasters said, with freezes likely across portions of the ...