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

An April cold snap is expected to bring unusually cold temperatures to the eastern half of the US next week. The cold snap could impact new spring vegetation and lead to frost in some areas.

The Polar Vortex in the upper atmosphere has disintegrated after the intense warming of the stratosphere in mid-March. Currently, its remains are traveling eastward across Canada to the United States.

A "major disruption" has recently rocked the Arctic polar vortex, causing it to weaken and reverse direction from ...

On March 9, the polar vortex wobbled and then snapped back the other way as mighty winds, suddenly shifting from the west to the east - something that typically happens once a year - usually in 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.

April 5, 2025 - By Laura Ciasto and Amy Butler - After spending much of the season with super strong wind speeds, the polar vortex bowed out two weeks ago, with the core west-to-east winds sliding ...

Copyright 2025 BBC. All rights reserved. The BBC is not responsible for the content of external sites. Read about our approach to external linking.