The 1869 Atlantic hurricane season was the earliest season in the Atlantic hurricane database in which there were at least ten tropical cyclones. Initially there were only three known storms in the year, but additional research uncovered the additional storms. Meteorologist Christopher Landsea estimates up to six storms may remain missing from the official database for each season in this era, due to small tropical cyclone size, sparse ship reports, and relatively unpopulated coastlines. All activity occurred in a three-month period between the middle of August and early October. 10 storms, 7 hurricanes, 1 major hurricanes (Category 3+). Strongest: an unnamed storm (115 mph). Accumulated cyclone energy ≈ 51. Wiki link