Fixed that for you. Seriously, this is quite unprecedented. Any cancellation by UW-Madison is unusual enough, not to mention that they decided the night before. Here's the UW-Madison release. I doubt that library staff are considered "essential," based on the examples given of essential staff (patient care, animal care, snow removal, etc.) They specified that housing staff are essential, but that's because the dorms are full of students who presumably still want meals and stuff. While I was composing this post, my S.O. (who is a UW librarian) got off the phone with the director of Memorial Library, indicating that all UW libraries would be closed Wednesday. Opey, if you want to be completely sure that the Law School isn't doing its own thing (as they seem to be wont to do), I'd call the Law Library or consult the law school website. I don't yet have confirmation that my library (which is located on campus but is a non-UW state agency) will be closed. My supervisor's home phone was busy. Generally, state agencies don't close without an order from the governor. Jim Doyle has declared a state of emergency for all counties in Wisconsin due to the snow, but I don't know that that translates into nonessential state agencies closing.