Travelers check in at the American Airlines ticket counter at Terminal 3 in O'Hare International Airport in Chicago on Saturday, Dec. 21, 2013. The National Weather Service issued a hazardous weather outlook for north central Illinois, northeast Illinois and northwest Indiana on Saturday morning.
Travelers check in at the American Airlines ticket counter at Terminal 3 in O'Hare International Airport in Chicago on Saturday, Dec. 21, 2013. The National Weather Service issued a hazardous weather outlook for north central Illinois, northeast Illinois and northwest Indiana on Saturday morning. Nam Y. Huh AP
Travelers check in at the American Airlines ticket counter at Terminal 3 in O'Hare International Airport in Chicago on Saturday, Dec. 21, 2013. The National Weather Service issued a hazardous weather outlook for north central Illinois, northeast Illinois and northwest Indiana on Saturday morning. Nam Y. Huh AP