1900 Galveston hurricane
The Great Galveston Hurricane, known regionally as the Great Storm of 1900, was the deadliest natural disaster in United States history, one of the deadliest hurricanes (or remnants) to affect Canada, and the fourth-deadliest Atlantic hurricane overall. The hurricane left between 6,000 and 12,000 fatalities in the United States; the number most cited in official reports is 8,000. Most of these deaths occurred in the vicinity of Galveston after storm surge inundated the entire island with of water. In addition to the number killed, every house in the city sustained damage, with at least 3,636 destroyed. Approximately 10,000 people in the city were left homeless, out of a total population of nearly 38,000. The disaster ended the Golden Era of Galveston, as the hurricane alarmed potential investors, who turned to Houston instead. The Gulf of Mexico shoreline of Galveston island was subsequently raised by and a seawall erected.
1947 Fort Lauderdale hurricane
A storm tide of up to was reported along the western half of the Mississippi coastline, causing heavy damage in Bay St. Louis, Gulfport, and Biloxi. The recorded tides in these communities were the highest ever recorded until Hurricane Camille, a Category 5 hurricane in 1969 and the strongest hurricane to strike the United States with sustained winds of , produced tides of up to . Although the storm had weakened by its second landfall, the hydrology of the region makes it particularly vulnerable to hurricanes. 12 people were killed in Louisiana and 22 in Mississippi. In both states combined, the Red Cross reported that the storm destroyed 1,647 homes and damaged 25,000 others, with the majority, up to 90%, of the destroyed having been due to water. In New Orleans, the storm produced an estimated 1947 USD$100,000,000 worth of damage to the city. Barometric pressures as low as 971.6 mb (28.69 inHg) and sustained winds as high as , equivalent to Category 2 intensity, were reported as far inland as Baton Rouge.