a low pressure area has formed about 740 km north-northwest of palau. early on july 14, the jma upgraded it into a tropical depression, and the jtwc issued a tropical cyclone formation alert. on july 15, the jma upgraded the system to a tropical storm and named it tokage, and the jtwc upgraded it to a tropical depression later. pagasa also upgraded it to a tropical depression and named it hanna. due to the fujiwhara effect, typhoon ma-on, the powerful storm just northeast of tokage, later weakened tokage to a tropical depression and completely absorbed it early on july 16.