The polar vortex has been absent from the United States for most of winter thus far, which lead to a very warm January. The Eastern Seaboard through the central and southern Plains recorded ...

Add Yahoo as a preferred source to see more of our stories on Google. Get ready for some much colder weather. Forecasters are calling for a return of the polar vortex in the coming days and weeks.

This winter’s harsh run is intensifying, with some of the coldest air so far this season plunging into New Hampshire.