Meteorologists had predicted that parts of the U.S. would experience the 10th and coldest polar vortex event this season.

A lobe of the polar vortex, a ring of freezing air typically found near the North Pole, will once again move into the central ...

The polar vortex has returned to the U.S., and frostbite-inducing temperatures are blasting millions of Americans.

A week-long, unusually cold Arctic outbreak will bring frigid conditions to most locations east of the Rockies starting today ...

As an arctic blast approaches, Oklahoma City is ramping up efforts to prepare roads and expand shelter operations for the ...

Meteorologists warn that the coldest burst of Arctic air this season is coming to put an icy and prolonged exclamation point ...

A cold weather advisory is in effect until noon Tuesday, with wind chills ranging between minus 15 and minus 25 before ...

The latest arctic blast will move into the northern Rockies and northern Plains Saturday and spread to the central and ...

Harsh cold descended on the nation's midsection Monday as a polar vortex gripped the Rockies ... U.S. stretching from the Canadian border to Oklahoma and central Texas, where the Arctic front ...

BISMARCK, North Dakota — More than 95 million people in the United States were facing numbing cold on Tuesday as a polar ...

NOAA weather models predict Wednesday lows below zero in Oklahoma, Colorado ... Obviously this isn’t the first polar vortex episode of the winter, but it looks to be the most severe.” ...