Deadly Feet Update5/30/2023 ![]() history, generated storm surge flooding of 25 to 28 feet above the normal tide level along parts of the Mississippi coast and 10 to 20 feet above normal tide along the southeastern Louisiana coast, the NHC said. Hurricane Katrina, one of the most devastating storms in U.S. Width and slope of the continental shelf: Storm surge will likely be greater on a wide and shallow slope, such as the Louisiana coastline, than on a narrow and steep slope like the one along Miami Beach in Florida. Size: Larger storms will generate more storm surge.Īngle of approach: A storm that perpendicularly hits the coast will have more storm surge than a storm that is parallel to the coast. A slower storm can build up a "higher and broader storm surge inland." ![]() Forward speed: A storm moving fast across the open ocean will generate more storm surge along the open coast, the NHC said.
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