For all of those waiting on decisions from Northwestern, classes and all non-essential services/activities have been canceled for Wednesday, the 30th, which is the first day that Northwestern has accepted students in the past five years (dates ranging from January 30th to February 5th). So, that is all to say, don't get too anxious if Northwestern is a day or two slower getting back to you than you expect in the next two weeks. I know Chicago has also cancelled classes on Wednesday, but I don't know if they have also shut down all non-essential services/activities.