A polar vortex dipping down from Siberia will bring a cold front with frigid temperatures to nearly 300 million Americans.

A polar vortex will plunge Colorado into bitter, sub-zero cold this weekend and could bring up to 10 inches of snow in some ...

The polar vortex is expected to reach the Utah-Idaho border sometime in the late afternoon and evening Friday as it continues ...

The polar vortex is a ring of cold air that typically circles the Arctic. A strong jet stream essentially acts like a fence, ...

A blast of Arctic air is set to cover much of the United States with temperatures below freezing starting on Friday and into ...

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

The polar vortex will extend into the metro St. Louis area Saturday bringing several days of temperatures plunging to single digits and wind chills below zero.

People living "basically anywhere from the Rockies eastward" will see extremely cold temperatures over the next several days, ...

It's going to get cold in Tennessee. Meteorologists predict freezing temperatures for much of the state. Here's the latest.

Following a winter storm moving through East Tennessee, roads are clear of ice and there are several construction projects ...