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.
List of off-season Atlantic hurricanes
Off-season cyclones are most likely to occur in the central to western Atlantic Ocean, and most do not make landfall. Of the storms that did strike land, most affected areas surrounding the Caribbean Sea. Cumulatively, at least 441 deaths occurred due to the storms, primarily on the islands of Hispaniola and Cuba; a tropical storm in May 1948 struck the Dominican Republic to become the deadliest off-season storm. However, an unofficial hurricane in 1863 killed 110 people, in a shipwreck off Florida and on land. The same storm was estimated to have reached winds of 105 mph (165 km/h), making it the strongest hurricane between December to May; the strongest currently in the official database was a March hurricane in 1908 that reached winds of 100 mph (160 km/h). In addition, the strongest off-season cyclone to make landfall in the United States was Tropical Storm Beryl in 2012, which made landfall near Jacksonville Beach, Florida with 65 mph (100 km/h) winds. The most recent off-season storm is Tropical Storm Alberto in May 2018.