Overview of Tropical Cyclones in December 2009

         Only one tropical cyclone, called Nida, occurred over the western North Pacific and South China Sea in December 2009.  

        After forming over the western North Pacific on 22 November, Nida gradually intensified into a super typhoon but weakened into a typhoon on 30 November. On 1 December, it was located over the western North Pacific about 590 km south-southwest of Iwo Jima, moving west-northwestwards slowly. Nida gradually weakened into a tropical storm the next day. It weakened further into a tropical depression on 3 December and dissipated over the western North Pacific about 800 km west-southwest of Iwo Jima that evening.