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 ...

The most potent blast will enter the north-central U.S. on Friday, the National Weather Service warned, before roaring across much of the rest of the nation over the weekend. Arctic air will ...

Temperatures will continue to drop into the 40s during the lunch hour before plummeting into the 30s during the evening ride home ... into 20s around sunset! Arctic Blast Moving In Today By ...