Latest News Wires Arctic air invasion captured in animation (+video)

Arctic air has driven down temperatures in most of the continental US. A new video animation from NOAA shows the arctic air swirling into the country and predicts its path.

M. Spencer Green / AP

If you live anywhere within the northern two-thirds of the United States, you've probably noticed that it's pretty chilly outside. The plunge in temperatures over the past few days comes courtesy of an invasion of Arctic air that has been captured in a mesmerizing new animation from the National Oceanic and Atmospheric Administration.