A strengthening bomb cyclone is barreling across the northern United States, unleashing severe winter weather in the Midwest and aiming at the East Coast. The storm brought blizzard conditions, treacherous travel and widespread power outages Monday across the Plains and Great Lakes. Forecasters say the storm intensified rapidly, meeting the criteria of what's known as a bomb cyclone. The sharp cold front left parts of the central U.S. waking up to temperatures 50 degrees colder than the day before. The National Weather Service had warned of whiteout conditions beginning Sunday that could make travel impossible in some areas.
