A blizzard is barreling across the U.S. Midwest. Already, over a thousand flights have been cancelled as massive traffic delays sweep the region. The huge storm was due to hit Washington, D.C. on Wednesday - where the National Weather Service expected the most snowfall in possibly two years. Here in Chicago, the Weather Service had issued a winter storm warning, with up to eight inches of snow expected. At the Windy City's O'Hare International Airport there's already been over six inches.