Interesting that the meat of this thread was from the leading edge of the real estate bubble bursting. I think most of us know what to do to get ready for a storm...I have begun to wonder what the plan will be to deal with the blight if, God forbid, a Category 4 or 5 hits here and demolishes all the empty bubble era houses. What a mess!
A few tricks I learned from Katrina-
Cell phone texting seemed to work really well, even in and out of NOLA.
Solar powered garden or Christmas lights can be used for low level lighting and will not impact your battery supply.
Get cash out of the ATM way early, or withdraw an even larger amount from the lobby-Traveler's Cheques are not a bad idea if evacuating, but cash is king if electronic payment systems are disrupted (pay at the pump for gas, for example).
Best bet-leave! Better yet, leave early and for goodness sake, don't be a jerk and leave your pets behind with a big bowl of food set out for them and expect them to make it.