The 1855 Atlantic hurricane season featured tropical cyclone landfalls in the Gulf Coast of the United States, the Greater Antilles, and Mexico, but none along the East Coast of the United States. It was inactive, with only five known tropical cyclones. Operationally, another tropical storm was believed to have existed offshore Atlantic Canada in late August and early September, but HURDAT – the official Atlantic hurricane database – now excludes this system. The first system, Hurricane One, was initially observed on August 6. The final storm, Hurricane Five, was last observed on September 17. These dates fall within the period with the most tropical cyclone activity in the Atlantic. At one point during the season, two tropical cyclones existed simultaneously. Two of the cyclones only have