 Toward the end of June , the monsoon trough extended across the western North Pacific Ocean just north of the equator , spawning two tropical disturbances . The easternmost one eventually developed into Typhoon Chataan , and the western disturbance persisted to the east of Palau with an associated area of convection . The system gradually organized , developing a weak circulation after wind shear steadily decreased . Early on June 28 , the Japan Meteorological Agency ( JMA ) classified the system as a tropical depression near Yap in the Federated States of Micronesia ( FSM ) . At the same time , the Philippine Atmospheric , Geophysical and Astronomical Services Administration ( PAGASA ) declared the system as Tropical Depression Florita , and a few hours later the Joint Typhoon Warning Center ( JTWC ) initiated advisories on Tropical Depression 09W . 
