A major winter storm has significantly impacted travel in the Midwest, particularly in Chicago, where over 1,400 flights have been canceled due to heavy snowfall. The National Weather Service has issued a Winter Storm Warning, with forecasts predicting snowfall totals of 6-10 inches across the metropolitan area. The storm has led to hazardous travel conditions, prompting snow emergencies in multiple regions, including the Rockford area and Metro Detroit. Residents are urged to exercise caution as heavy snow continues to fall throughout the weekend, with further complications expected for holiday travel.