 Forming as a tropical disturbance southwest of Kosrae on June 21 . Moving west @-@ northwest , the system gradually became better organized . On June 28 , the disturbance had organized into a tropical depression . Recurving east of the Philippines and Taiwan , Owen developed into a tropical storm , reaching its maximum intensity on June 29 . Thereafter , east @-@ northeasterly winds aloft led to vertical wind shear which weakened Owen . While moving north @-@ northeast towards southern Japan , the system devolved into a low level circulation devoid of thunderstorms , and dissipated on July 2 . 
