Polar Vortex expands to South, East

Credit: MGN Online

Polar Vortex expands to South, East

January 7, 2014 Updated Jan 7, 2014 at 9:51 AM CDT

The mass of frigid air known as the Polar Vortex is expanding south and east, bringing more of the US into a deep freeze.

Forecasters say up to 187 million people could feel the effects of the cold weather. Find out more by watching the video below.