The 1878 Atlantic hurricane season featured twelve known tropical cyclones, tied with 1886 and 1893 for the second-most active season in the latter half of the 19th century. Of the twelve tropical storms, eight strengthened into hurricanes, while two of those intensified into major hurricanes. However, in the absence of modern satellite and other remote-sensing technologies, only storms that affected populated land areas or encountered ships at sea were recorded, so the actual total could be higher. An undercount bias of zero to six tropical cyclones per year between 1851 and 1885 and zero to four per year between 1886 and 1910 has been estimated. 12 storms, 10 hurricanes, 2 major hurricanes (Category 3+). Strongest: an unnamed storm (140 mph). Accumulated cyclone energy ≈ 181. Wiki link