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.
Hurricane Katrina tornado outbreak
Hurricane Katrina began as a tropical depression on August 23 near the Bahamas. Moving northwest, the intensifying system was named "Katrina" the next day; it proceeded to make landfall on the southern tip of Florida as a minimal hurricane, causing extensive damage. In crossing Florida, the hurricane weakened to a tropical storm; however, the warm waters of the Gulf of Mexico allowed it to rapidly intensify to the seventh-strongest Atlantic hurricane on record. Afterward, Katrina made landfall as a Category 3 near Buras-Triumph, Louisiana on August 29, and once more near the Mississippi–Louisiana border. Katrina progressed northward through the Central United States and finally dissipated on August 31 near the Great Lakes, when it was absorbed by a cold front. Throughout its path, Katrina was responsible for $125 billion in damage and 1,245–1,836 fatalities. These ranked it as the costliest natural disaster in United States' history and the deadliest since a hurricane in 1928.