Nation ‘Life-threatening’ Arctic blast to freeze nearly 200 million as Polar Vortex attacks U.S. January 25, 2019Doyle Rice, USA TODAYComments Off on ‘Life-threatening’ Arctic blast to freeze nearly 200 million as Polar Vortex attacks U.S. Here comes the polar vortex: Next week's cold blast will be "life-threatening," "dangerous," "brutal," and "unprecedented."