Meteorologists warn that the coldest burst of Arctic air this season is coming to put an icy and prolonged exclamation point ...

The coldest burst of Arctic air this season is coming to put an icy exclamation point on America's winter of repeated polar vortex invasions, meteorologists warn. And it will stay frozen there all ...

Ushering in the vortex is a winter storm, the third one of the week, which will track from the Intermountain West on Friday ...

As the polar vortex stretches its icy grip, America braces for a winter like no other. Discover the forces behind this ...