It's IU policy to operate at all times, but there are occasions when classes or activities must be canceled or delayed on a campuswide basis, or, on the regional campuses, when a campus actually closes.
When delays, cancellations or closures occur for an entire campus, rather than for individual classes, for example, students and employees will receive an IU-Notify emergency alert. It's important to make sure IU-Notify alerts go to you (not to your parents or office phone).
You can check your settings by searching for IU-Notify in one.iu.edu.