While Katrina has made all of us think twice about our future evacuation plans, I believe strongly that on the east coast of Florida, we are not nearly as prone to a storm surge the size of Katrina. The shallow water of the Gulf, with it's curving, bowl-shaped configuration is a recipe for storm surge, whereas the relatively deeper, near-shore water of the Atlantic and the much straighter coastline to dissipate the wave buildups, results in smaller storm surges for East Coast Atlantic storms vs. Gulf Coast storms. While the winds do plenty of damage, clearly (Ivan, Katrina) the storm surge is much more destructive, and I think the Indialantic area would never see a surge of 25-30 ft, unless it were a tsunami. Ok, never say never, but bottom line is I think a Cat III Atlantic storm and a Cat III gulf storm do not produce equal storm surges, so I'm not sure it's a good idea to extrapolate the results of Katrina to future storms on the East Coast of FL.. I've looked at a site online that covers this, but I don't have it right now. If I find it, I'll edit this and provide a link.