1900 Galveston hurricane
The Great Galveston hurricane made landfall on September 9, 1900, near Galveston, Texas. It had estimated winds of at landfall, making the cyclone a Category 4 storm on the modern day Saffir–Simpson Hurricane Scale.
The hurricane caused great loss of life, with a death toll of between 6,000 and 12,000 people; the number most cited in official reports is 8,000, giving the storm the third-highest number of deaths or injuries of all Atlantic hurricanes, after the Great Hurricane of 1780 and Hurricane Mitch in 1998. The Galveston Hurricane of 1900 is the deadliest natural disaster to strike the United States. This loss of life can be attributed to the fact that officials for the Weather Bureau in Galveston brushed off the reports because the city had "weathered them all" and they did not realize the threat. The second-deadliest storm to strike the United States, the San Ciriaco hurricane of 1899, caused around 3,400 deaths.
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.