I think everyone has come up with the basics, but having grown u in Hurricane world, having been in Camille (and when I say in I mean in, I kind of suspect Liketoeat might have been in the neighborhood too) I have a couple of hints.
1) Get a decent quality battery powered radio, preferably a shortwave that picks up police bands. In New Orleans and on the central gulf coast we are fortunate enough to have WWL, which is a 50,000 Watt station and in the evenings can be heard in most of the central US and in alot of the carribbean (in fact, the signal is strong enough that a number of early reggae guys like the Skatalites give it some credit for influence). And get lots and lots of batteries.You can find out alot by listening to the police bands.
2) If you are lucky enough to have a bige freezer, get a bunchof gallons of water and stuff (the less airspace in your freezer the better) it full. This will do two things 1) Provide you with water if it goes out or becomes contaminated (my town is on a well powered system and when the power is down..no water)2) It will keep the things in your freezer a whole lot longer
3)Stock up on charcoal and or bottled gas. If is a real storm you may be cooking outside (the stuff in your freezer probably) for some days and stores around here always run out
4)Beer (never goes bad and is always good
5) Go get some cash. We have lost power in the last couple of years for over 5 days 3 times (I am in a pretty isolated area out of town) and when the card machines are down, cash can be your friend.
6) Duck and stay away from the window