First real polar vortex of season hits U.S.
GRAND RAPIDS, Mich. (MEDIA GENERAL) – The term “polar vortex” may be overused, misused and confusing.
But, the reality is, this week, it is real. Much of the country will be wrapped up in the first real polar vortex of this winter season this weekend. After last year’s brutally cold winter, the “polar vortex” has become the lexicon of winter weather language.
So what is a polar vortex? A polar vortex is the coldest temperatures found in the northern hemisphere relative to average from the surface to 18,000 feet above ground. It is forecast to happen this weekend.