A polarvortex is slated to sweep most of ... chills to parts of Midwest to the East Coast, according to the NationalWeatherService. After descending over the Rockies and Great Plains ...
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 ...