Arctic air has brought chilling temperatures as low as 12 degrees to New York City — but are we in a polar vortex? A polar vortex settled over New York City and New Jersey following Sunday’s ...

NEW YORK CITY - As a wave of extreme cold grips the U.S. this weekend, many are wondering about the polar vortex – a phenomenon responsible for plunging temperatures and icy conditions.

A pinwheeling section of the polar vortex is clearing customs at ... keeping day and nighttime temperatures lower. New York City, for example, could see a low temperature of about 11 degrees ...

After the polar vortex made its most dreadful and intense appearance in New York City this past winter, spring is finally in ...

Several days with temperatures of 10-20 degrees below the historical average could be dangerous to plants and ruin outdoor ...

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.

"The large polar vortex disruption from the second week ... where it will feel more like late February in Chicago and New York early next week as highs drop into the 30s and 40s," Savona said.