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

Historically, the polar vortex hasn't always behaved the same way. In recent decades, scientists have observed intriguing patterns. Between 1979 and 1996, weak vortex events only happened about 3 ...

A polar vortex is a large area of low pressure and ... which should aid in relieving areas of New England experiencing weak to moderate drought conditions.

A polar vortex collapse is expected over the next two weeks, causing extreme winter weather and travel disruption across North America. The weather phenomenon is expected to develop in mid-March ...

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 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 ...

In summary, a strong polar vortex usually corresponds with a strong and stable jet stream, while a weak polar vortex leads to a weaker and wavier jet stream. The Met Office explains ...

A polar vortex collapse is set to send the mercury plunging as "extreme conditions" sweep across the US and Canada. The meteorological switch-up is set to develop by the middle of the month and ...

A sudden stratospheric warming (SSW) was behind the bitter winter storm which struck Britain, bringing heavy snow, ice and strong winds and leading to 17 deaths across the UK. Forecasters believe ...

The coldest burst of Arctic air this season is coming to put an icy exclamation point on America’s winter of repeated polar vortex invasions, meteorologists warn. And it will stay frozen there ...

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.