High Quality Content by WIKIPEDIA articles! The 2007 Atlantic hurricane season was an active Atlantic hurricane season that produced 17 tropical cyclones. It officially started on June 1 and officially ended on November 30, dates that conventionally delimit the period during which most tropical cyclones form in the Atlantic Ocean. The first tropical cyclone, Subtropical Storm Andrea developed on May 9, while the last storm, Tropical Storm Olga, dissipated on December 13.