The biggest batch of record-setting cold temperatures are likely to hit early Thursday and Friday, Orrison said. But North Dakota already felt more like the North Pole on Tuesday as Bismarck hit minus ...

The North Pole has unleashed "a large pool of Arctic air" that’s headed straight to the U.S., setting the stage for "record cold temperatures and dangerously cold wind chills," warns the National ...

The term “polar vortex” usually refers to the gigantic circular upper air weather pattern in the Arctic region, enveloping ...