I've just been watching the Hurricane Katrina news coverage from Louisiana. Scarey stuff.
Several years ago Bert, Clint and I were in Louisiana when a hurricane struck. We spent a day and a half stuck in a motel room in Lafayette. It was a mixture of exciting and boring. We watched the winds peel the roof off the Lebanese restaurant where we'd eaten the previous evening. The hurricane we experienced wasn't even close to the strength of Katrina but it caused a lot of disruption and made a big mess.
Late summer/ early autumn is not a good time to visit the Gulf of Mexico states.