[citation needed] The PAGASA later named the tropical cyclone as "Nimfa" as it entered its area of responsibility, with the JTWC issuing a medium warning.

[citation needed] A non-warning tropical depression in the South China Sea merged with the circulation of Tapah on Thursday, September 19.

[citation needed] Tapah then began to rapidly weaken, transitioning into an extratropical storm on September 23 at 00:00 UTC.

[3] JMA issued a red warning for stormy weather and high waves over the coastal Prefectures of central and northern Honshu.

In addition, media reported that more than 400 flights were canceled and that several railway disruptions and power outages affected around 28,500 buildings.