I'm on my way out the door but will say this,in the Northridge Quake I had fish and water splash out over 3 feet into the middle of my living room,in hindsight I was luck I wasn't stepping on fish while trying to make my way out in the dark(I don't think).The tank stayed put but it was in wall shelf.Now, it's on a tall stand so it could be worse.
Now,I keep my tank in my office which I will not need to pass while trying to make my way out the door in the event of another quake.I don't want to worry about stepping on glass or slipping in water.