I slept through a tornado in and RV once. Wouldn’t even notice a warning the way I sleep or used to.
If you were in Kansas you could have woken up in Oz...
Well, I woke up, rode out the shaking. Picked a few things up in the refrigerator, and went back to sleep. Place was trashed but no reason to clean up trash at 0-dark-thirty.
I don’t see what ten seconds would have made much a difference.