PHT (00:30 UTC), Chanthu made landfall in Ivana, Batanes as the storm began to weaken slightly. On September 11, Chanthu began to weaken as it continued to move northwards with the presence of dry air. The PAGASA issued its last bulletin for Chanthu since it exited the PAR on the next day. By September 14, Chanthu was no longer a typhoon as it slowly moved south-eastwards towards Japan. Due to decreasing wind shear and marginally favorable sea surface temperatures, Chanthu strengthened enough for the JMA to re-classify it as a severe tropical storm on the next day. On September 17 on 09:00 UTC, Chanthu crossed near the town of Ikitsuki, Nagasaki in Japan. It continued to move northwards as it moved through the rugged Japanese islands, causing it to weaken significantly. This caused the JMA to downgrade it to a tropical storm three hours later. At 21:00 UTC, the JTWC downgraded it to a tropical depression, as it was also undergoing extratropical transition. On September 18, the JTWC issued its final warning for the system. Chanthu caused devastating effects in the islands of Batanes as it was made a direct hit from the typhoon. According to the local residents it was the most ferocious storm even seen. More than 30,000 residents were affected from Region I, II, III and CAR. Four municipalities went without power and none were restored and one municipality experienced water supply outage and none were restored. There were also reports of landslide and flooding mostly from Region I and III. As of September 15, total damages from the typhoon were up to ₱37.4 million (US$748,000). On September 12, Chanthu passed east of Taiwan. This caused heavy rainfall over the island including the capital city Taipei. Up to of rainfall was recorded and winds up to were reported. In China, the storm shut down both Shanghai Port, the world's largest container port, and Ningbo-Zhoushan Port, the world's largest port by cargo throughput, briefly on 12–14 September, with about 86 vessels waiting outside the ports. As Chanthu passed near the island of Jeju, it caused winds up to and of rainfall. There were reports of structural damage and overwhelmed drainage systems on the island. 23 flights were grounded and 48 ferry sailings were cancelled. Typhoon Mindulle On September 21, the JTWC spotted an area of convection formed approximately from Guam. The system rapidly consolidated itself and formed a