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

A potent surge of Arctic air starts settling in Monday evening as a massive dip in the jet stream pulls in frigid air across ...

Major winter storm brings heavy snow to East Coast as Arctic blast puts millions under warnings from Plains to Maine ...

Millions of Americans are bracing for life-threatening cold as an arctic blast driven by the polar vortex plunges ...

An arctic air mass settled over New York City and much of the country Sunday evening, bringing a deep freeze and the chance ...

Several businesses and organizations have announced closings and cancellations ahead of the extremely cold temperatures.

Residents across the country from the Northern Plains to the tip of Maine are bracing for dangerously low temperatures ...

The arctic blast is expected to affect millions of people across the United States with brisk winds, and dangerously cold ...

Temperatures as low as 14 degrees below zero will hit Denver on Monday night. With the wind chill, it could feel as cold as ...

Colorado woke up Sunday to extremely cold temperatures and dangerous wind chills. We started at -11 at Denver International ...

The state's Governor Phil Murphy made the announcement Saturday night ahead of an Arctic Blast which is set to barrel in on ...