The polar vortex's blast of Arctic air from Canada brought the season's coldest weather to the majority of U.S. The vortex is ...

A major Arctic outbreak is building, bringing below-freezing temperatures to more than 100 million Americans next week.

ANNAPOLIS, Md. (AP) — A huge swath of the U.S. was blasted with ice, snow and wind on Monday as the polar vortex that dipped south over the weekend kept much of the country east of the Rockies ...

Abnormal weather events and severe winter storms could be caused by a disrupted polar vortex. Find out here how the polar ...

NORFOLK, Va. (AP) — The plunging polar vortex brought subfreezing temperatures Tuesday to some of the southernmost points of the U.S., threatening to dump snow on parts of Texas and Oklahoma in ...

While the term "polar vortex" might seem like a new phenomenon, the phrase has only recently become popularized in weather forecasts, especially when it reaches into the southern plains states ...