Hurricane Dennis was an early-forming major hurricane in the Caribbean and Gulf of Mexico during the 2005 Atlantic hurricane season. Dennis was the fourth named storm, second hurricane, and first major hurricane of the season. In July, the hurricane set several records for early season hurricane activity, becoming both the earliest formation of a fourth tropical cyclone and the strongest Atlantic hurricane ever to form before August, according to available records.
Dennis hit Cuba twice as a Category 4 hurricane on the Saffir-Simpson Hurricane Scale, and made landfall on the Florida Panhandle in the United States as a Category 3 storm less than a year after Hurricane Ivan did so. Dennis caused at least 89 deaths (42 direct) in the U.S. and Caribbean and caused $2.23 billion (2005 US dollars) in damages to the United States, as well as an approximately equal amount of damage in the Caribbean, primarily on Cuba. (image courtesy of UWisc CIMSS.)