However, a deep freeze, thanks to the polar vortex dipping down from Siberia, is bringing an even harsher arctic blast to million Americans this week. Maps show what to expect as the cold front ...

Temperatures will plummet by up to 40 degrees this weekend as an arctic blast spreads across much of the U.S., including the ...

A massive Arctic blast is moving across the United States, putting 70 million people under winter storm warnings, with snow targeting the East Coast followed by dangerously cold temperatures ...