atlantic hurricane season atlantic hurricane season consecutive atlantic hurricane season hurricane landfall united_states longest period record absence modern satellite remote sensing technologies storms affected populated land areas encountered ships sea recorded actual total higher bias zero tropical cyclones year estimated known cyclones documented system initially observed offshore july peaked category hurricane modern day saffir simpson hurricane wind scale moving rapidly northeastward storm noted east newfoundland july system observed south central gulf_of_mexico july cyclone tracked single point storm path exists tropical cyclogenesis dormant month hurricane spotted august east lesser antilles early following day hurricane crossed islands martinique traversing caribbean_sea storm landfall belize late august dissipating day ships encountered storm coast storm surge flooded areas fourth tropical storm observed east_coast united_states september september number ships sailing vicinity storm encountered heavy fifth final known tropical cyclone tracked offshore east_coast united_states similarly vessels experienced rough seas severe thunderstorms season activity reflected accumulated cyclone energy ace rating ace broadly speaking measure power hurricane multiplied length time existed storms long time particularly strong hurricanes high aces calculated advisories tropical systems exceeding mph tropical storm strength storms hurricane storm observed brig july located miles offshore carolinas reported sustained winds mph equivalent category hurricane modern day saffir simpson hurricane wind scale early july hurricane weakened tropical storm hours later storm noted ship energy located east newfoundland tropical storm storm known single ship report july bark daniel bound new_york encountered tropical storm reef north vessel spent hours cyclone struck lightning hurricane hurricane observed east lesser antilles august storm moved westward brought severe weather martinique including hurricane force winds trek caribbean_sea system maintained winds mph late august hurricane landfall coast ships damaged sunk brig hannah bark ships capsized land tides normal caused coastal flooding belize storm traced sediment near system steadily weakened land tropical storm based reports ships tropical storm known existed east_coast united_states september september number ships approaching new_york september reported easterly gale vessels endured storm september hurricane final tropical cyclone season observed santa martha early october located east northeast based reports ships quickly moved northward intensified category hurricane midday october time hurricane peaked maximum sustained winds mph storm moved rapidly east northeastward noted south southwest late october
1864 Atlantic hurricane season