dude, there is absolutely NOTHING you can do to tornado proof a structure. especially an F4 tornado. that's fucking huge.
this is about and hour and a half from me. this storm passed through my area as well, but no tornados. it was fucking gnar tho. it's crazy how destructive it was once it finally popped off. people are finding debris, ie pictures, etc, 2-3 hours away from where the tornado hit.
one thing i don't understand...i was listening to a victim being interviewed on the radio yesterday and she said her house was completely destroyed, but in what used to be her bathroom her garbage can was still sitting in the same position completely undisturbed...tissues, qtips, etc still sitting right on top where they were. how does everything else around it get demolished but something as light as a bathroom garbage can remain un-touched.