 On September 5 , former Hurricane Jimena crossed the International Date Line into the basin . By that time , the circulation was largely exposed from the convection , and the center quickly dissipated . Later in the month , the monsoon trough spawned a disturbance east of the Philippines that PAGASA classified as Tropical Depression <unk> on September 15 . The system moved westward but never intensified , dissipating west of Luzon on September 19 . The broad system also spawned Typhoon Choi @-@ wan . 
