The Pacific typhoon season runs throughout 2006 and has no official bounds, though most tropical cyclones from this basin generally develops from the months from May through to October. Despite the season turned out to be active, most tropical cyclones developed during the second half of the year, with only one typhoon, Chanchu developing during the month of May. Some minor systems also developed before May, with the first tropical system of the year, Agaton, developing to the east of Philippines on January 20, bringing minor damages as it crossed the country few days later.