A new blast of Arctic air sweeping from north to south will bring bone-chilling temperatures to millions of Americans this ...

A major disruption to the Arctic polar vortex has bumped the ring of wind that circles the North Pole off its perch and towards Europe, a new animation shows. The migration could trigger ...

A rare glimpse into the wintry conditions of the Mars north polar vortex has shown that temperatures inside the vortex are far colder than outside, and that the permanent darkness that winter brings ...

The Earth's polar vortex is strengthening, signaling a gradual cooling and a more active storm track across the northern U.S. North Carolina's first freeze typically occurs between late October and ...

A schematic of temperature measurements shows how it is 40 degrees Celsius colder inside the north polar vortex (indicated by the yellow line) compared to outside the vortex. A rare glimpse into 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. When you ...