Watch a video of the polar vortex taking over the East Coast
This NASA animation shows the polar vortex, normally contained to the arctic, traveling southward from late December to early January
Wed Feb 19 2014
Still via NASA
Remember the polar vortex, which crippled NYC and pretty much the entire eastern side of the country in early January? (6,669 insane people still rode Citi Bikes.) NASA has turned that frigid experience into an animated visualization, using satellite data from late December 2013 through January 2014, when the brutal cold peaked on the 6th of the month. The science behind the freezing weather tells us that the polar vortex—a pattern of winds normally swirling above the arctic—headed south this winter, bringing record-breaking temps to New York as well as unexpected places like Alabama and Colorado. Watch the chilliness unfold here.
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