If a tornado is headed toward you, you don't have time to grab your bettas, unless you have only one or two and can grab them on the way to your basement/safe place. Same with a flood, you really don't have time to bag them up or anything. With a hurricane, you have up to a week to get ready. Last two big ones to head this way (Dennis, and then Katrina), I packed them up in bags, put them in a cooler, and headed for safety. Thank god I did for Katrina, I couldn't get home for almost 2 weeks, I don't think they would have made it if I hadn't.