A woman crosses the street in downtown Chicago, Sunday, Feb. 2, 2014. A new storm system threatens to bring significant snowfall Tuesday and Wednesday, followed by more arctic air that will drop ... more 
A woman crosses the street in downtown Chicago, Sunday, Feb. 2, 2014. A new storm system threatens to bring significant snowfall Tuesday and Wednesday, followed by more arctic air that will drop readings to subzero levels again both Wednesday and Thursday mornings. (AP Photo/Nam Y. Huh) less 
1 / 1
Associated Press | Photo By Nam Y. Huh
Sun, Feb 2, 2014 5:33 PM EST