Could An Event Be Canceled Because Of Snow?

I'm going to a health care seminar today from 9-3, and there is a winter storm warning right now. We are supposed to get between 5-7 inches of snow, and the warning lasts until 3 pm today. The seminar is in the downtown area of Madison, WI, so there will be plows and everything, but I'm pretty sure that there are a lot of people coming from out of Madison. Could this be canceled?