 The 1899 Atlantic hurricane season featured the longest @-@ lasting tropical cyclone in the Atlantic basin on record . There were nine tropical storms , of which five became hurricanes . Two of those strengthened into major hurricanes , which are Category 3 or higher on the modern day Saffir – Simpson hurricane wind scale . The first system was initially observed in the northeastern Gulf of Mexico on June 26 . The tenth and final system dissipated near Bermuda on November 10 . These dates fall within the period with the most tropical cyclone activity in the Atlantic . In post @-@ season analysis , two tropical cyclones that existed in October were added to HURDAT – the official Atlantic hurricane database . At one point during the season , September 3 through the following day , a set of three tropical cyclones existed simultaneously . 
