A low-pressure area east of extreme northern Luzon developed into a tropical depression on June 28. On the next day, PAGASA began issuing advisories, giving the name Florita. 6 hours later, Florita became a tropical storm, with JMA assigning Prapiroon for the international name. On June 30, Prapiroon began to intensify into a tropical storm. By July 3, Typhoon Prapiroon had peak intensity. On the same day, Prapiroon made landfall on Japan. After landfall, Prapiroon briefly weakened to a tropical storm. Prapiroon became a low-pressure area on the next day, until July 10, when it finally dissipated.