In the coming weeks, cold air will continue for parts of the U.S. thanks to the influence of the polar vortex.

Meteorologists warn that a stretched polar vortex could bring severe winter weather to much of the United States.

Michigan is set for several days of frigid temperatures and heavy lake-effect snow as Arctic air continues its slow march across the eastern U.S. When Arctic air surges into the U.S., the polar vortex ...