A sudden stratospheric warming event reversed the winds that make up the northern polar vortex on March 9. A new animation ...

Several days with temperatures of 10-20 degrees below the historical average could be dangerous to plants and ruin outdoor plans.

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 ...

A polar vortex collapse is predicted to bring severe winter-like weather to parts of Canada and the US around the middle of this month. This same weather event affected several regions across ...

There is a sudden warming about to happen high up in the atmosphere. This warming will affect the Polar Vortex. The Polar Vortex is a fast-spinning circular motion usually located about 50,000 ...

A spokesperson said: "The stratosphere polar vortex is now weakening rapidly. Over the last few days, the forecasts have become very confident and we are almost certain there will be a sudden ...

The Met Office said: "The stratosphere polar vortex is now weakening rapidly ... Sometimes, this can temporarily weaken, or 'collapse', meaning cold air descends very rapidly.