 Two days later, the system strengthened to the first officially named tropical storm of the season, Vongfong.Tropical Storm Vongfong then intensified immediately into a significant typhoon and struck the central part of the Philippines on May 14, first making its landfall in San Policarpo, Eastern Samar, crossing 4 more islands and hit mainland Luzon.After Vongfong, a month of inactivity ensued, and on June 10, a new tropical depression formed off the coast of Samar, Philippines, and was named Butchoy by the PAGASA a day later.