A lot of people are starting to think and the Red Cross has a really good tool to help people prepare for a disaster situation visit
http://www.redcross.org/services/pre...,0_77_,00.html and check it out. Just use the link to see checklists of what you should do to prepare for emergencies in your area. Think of every possible thing no matter how slim the chance is and plan for the worse, which could be a combination of any of them.