Arctic polar vortex switches to clockwise rotation due to stratospheric warming event, affecting global weather.

The Arctic's polar vortex, a cold air mass that usually circles the Arctic, has switched its usual counterclockwise motion to a clockwise rotation due to a sudden stratospheric warming event. The phenomenon, one of the most extreme in recent memory, could have implications for global weather conditions. Despite this reversal, the polar vortex is expected to return to its regular pattern soon.