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GRAND ISLE, LOUISIANA - AUGUST 7: A cross stands in the Cheniere Caminada cemetery, where most of the 779 local victims of an unnamed 1893 hurricane are buried in mass graves, on August 7, 2025 near Grand Isle, Louisiana. New Orleans and the Gulf Coast region are preparing to mark the 20th anniversary of Hurricane Katrina, which made its second U.S. landfall on August 29, 2005 near Grand Isle and wreaked widespread damage to Louisiana’s only inhabited barrier island. In 2021, on the 16th anniversary of Katrina, Hurricane Ida delivered catastrophic damage to Grand Isle and nearby Port Fourchon. Katrina resulted in nearly 1,400 deaths, according to revised statistics from the National Hurricane Center, and remains the costliest storm in U.S. history at around $200 billion in today’s dollars. (Footage by Mario Tama/Getty Images)