Actually...storm surge will wipe out the bottom of buildings and they'll come down. Apts aren't built to withstand...storm surge...suggestion read up on storm surge...if you looked at Camille link one in particular was an apt complex...storm surge took it down...
If this turns out to wipe out Old NO, it would be similar in devastation to one of those Arab nukes. Seems like nobody is talking about this storm bringing the country to its knees. Old NO will be rebuilt on higher ground and we can do it without working up a sweat. Same, I think, for an Arab nuke.
Not likely to go down this way. New Orleans is not a coastal city. The flooding will come quickly, but I wouln't think with the same force you had along the Gulf Coast in Mississippi.