It probably threw a fan blade, have a close look at the center.

Pulling the fan belt and running engine will take the accessories out of the picture.

With engine off, belt off, spin the fan by hand and let is coast to a stop, see if it stops in the same place every time. If it does, the missing blade area will be pointing up.

There is a small change the auto trans flex plate cracked, but they usually just make noise and don't vibe.