Graphical Abstract

Bagtasa, G., 2019: Enhancement of summer monsoon rainfall by tropical cyclones in northwestern Philippines. J. Meteor. Soc. Japan, 97, 967-976. Abstract with highlights

Plain Language Summary: The Philippines’ location makes it vulnerable to the hazards of tropical cyclones forming in the western North Pacific Ocean. This study looks at how distant tropical cyclones can cause heavy rainfall in the northwestern region of the Philippines. Though almost all heavy rainfall events in that region of the Philippines are caused by tropical cyclones during summer season, only about 10% are due to tropical cyclones directly hitting the area. 90% of heavy rain events are due to cyclones that are hundreds of kilometers away, particularly, around the region between Okinawa and Luzon. The presence of tropical cyclones are able affect the monsoon circulation leading to heavy rainfall along the northwestern coasts of the Philippines.