The serious take home here is that the Atlantic Seaboard needs to be Hurricane proofed. That means many things. The best solution will be to grow barrier reefs everywhere possible. This also controls sand erosion as well. Once fully built up they will break the weight of most storm surges unless extremely unlucky. The same needs to be done on the Gulf coast as well.
The impact has been sorely under estimated due to a now obvious quiet period which is showing signs of ending.
Other than that we need to charge insurance commensurate with the newly appreciated risk. This may drive new building onto higher ground over the long term and should be geared to do so..