On October 23, the JMA began tracking a tropical depression approximately 190 nautical miles (350 km) north of Palau.[1][2] On the same day, PAGASA followed suit as the system formed inside of the Philippine Area of Responsibility, east of Mindanao, and named the system Quinta.[3] On the following day, the JTWC also recognized the system as a tropical depression.[4] At 15:00 of the same day, the JTWC upgraded the system into a tropical storm, with the JMA and PAGASA doing the same a few hours apart from each other.