It's a term you hear every couple of winters, when we get stuck in the coldest of cold patterns – polar vortex. But what exactly is it and how does it impact our weather? The polar vortex is like a ...

January is shaping up to be the coldest in a decade as the polar vortex dips south across the eastern half of the United States — shocking a nation that has enjoyed an unusually balmy end of the year.

Most of the holidays may be over, but winter is sticking around — and it's bringing freezing weather to Texas next week. A polar vortex, a weather pattern similar to the historic winter storm that ...