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 ...

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