High Quality Content by WIKIPEDIA articles! The 2008–09 Australian region cyclone season was an event in the cycle of tropical cyclone formation. It officially started on 1 November 2008, and officially ended on 30 April 2009. The regional tropical cyclone operational plan defines a "tropical cyclone year" separately from a "tropical cyclone season"; the "tropical cyclone year" began on 1 July 2008 and ended on 30 June 2009.