Is anybody on your project team counting on a snowstorm? Do you remember ever doing this as schoolkid? You had an assignment due tomorrow but you put it off and now you do not think you can get it done. But you’ve heard that it is supposed to snow tonight so you are counting on a school cancellation to get you out of the jam!
Unfortunately, sometimes project team members over promise and cannot deliver. Then they go looking for ways to blame the project delay on others. In school, at most, you would get a bad grade and, hopefully, learn a valuable lesson. But in your project team this behavior can be extremely disruptive.