Wikipedia says the Superdome is safe up to 120 MPH. No one knows after that. http://en.wikipedia.org/wiki/Louisiana_Superdome
Wikipedia isn't exactly etched in stone.
Feel free to hypothesize how wind, even with debris, brings down a giant steel dome, encased in concrete. Save your fears for the rational world.I'll take a stab it it; you left out this part below - so I'm going to propose a wind and tide surge event:
The Superdome is built to withstand most catastrophes; the roof is estimated to be able to withstand up to 120 MPH wind, but flood waters could still possibly reach reach the second level 20 feet from the ground which makes this structure an unreliable shelter in severe rain and wind.
There are too many people here who seem to want the dome to turn into a Irwin Allen disater movie. It won't.
******
Yeah and not even God could sink the Titanic. There is not enough money in the world to put me in that thing....I'd be goin with the turtles and snakes first.