However, a deep freeze, thanks to the polar vortex dipping down from Siberia, is about to bring even harsher arctic blast to nearly 300 million Americans starting this weekend. Maps show where and ...

The Mid-Atlantic is in for plummeting temps in the new year. A polar vortex, a massive pocket of frigid air that swirls in place over the North Pole, is expected to spill out and push Arctic temps ...

More than 100 million Americans remain under a weather alert as a ‘Polar Vortex’ makes its way across ... travelling on dangerous backcountry terrain and on slopes ‘steeper than 30 degrees ...