In 1860, a storm surge and great winds resulted in the total devastation of the island. In the 1893 Atlantic hurricane season Grand Isle was devastated by a storm surge. In the 1909 Atlantic hurricane season the island was hit with a second storm surge. A Category 4 hurricane devastated Grand Isle on 29 September during the 1915 Atlantic hurricane season. Grand Isle was hit by a storm surge on 22 August during the 1947 Atlantic hurricane season. In 1956 Hurricane Flossy damaged the island.