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The Polar Vortex is a whirling and persistent large area of low pressure, found typically over both north and south poles. The northern Polar Vortex is pushing southward over western Wisconsin/eastern Minnesota today, Monday, January 6, 2014 and is bringing frigid temperatures to half of the continental United States. It is expected to move northward back over Canada toward the end of the week. This image was captured by NOAA's GOES-East satellite on January 6, 2014 at 1601 UTC/11:01 a.m. EST. A frontal system that brought rain to the coast is draped from north to south along the U.S. East C…
