A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of the arctic blast.
A map shared by Jeff Berardelli ... Forecasters expect the lowest temperatures to be reached on Wednesday and Thursday mornings. The cold front will begin waning on Friday and die down through next ...
According to the NWS, the Arctic polar vortex is a powerful band of west-to-east winds that develops in the stratosphere, about 10 to 30 miles above the North Pole, during the winter season. It is ...