Fujiwhara effect
On August 16, a tropical depression had developed within a marginal environment for further development about southeast of Taipei, Taiwan. During that day, the low level circulation consolidated while moving to the southeast, given the name Maring by PAGASA. It interacted with another depression to the north, exhibiting the Fujiwhara effect. On August 18, the depression also known as Maring strengthened into a Tropical Storm Trami according to the JMA, while steadily tracking generally eastwards. Trami weakened below typhoon intensity on August 23. The remnants of the system continued to move inland in a westerly direction. Trami made landfall in the Fujian province of China on August 22, 2:40 a.m. local time.