Less than a day later, when convection started to rapidly organize around the storm's center, and a well-defined rain band at the northwest side of the storm, JTWC upgraded it to a typhoon. Vongfong made landfall on Samar Island at around 12 PM Philippines Time. It began to weaken because of many landfalls over the Philippines, and emerged into the South China Sea on May 17. It turned north and dissipated due to high wind shear the next day, just south of Taiwan.