Typhoon Rammasun , known Know in the Philippines as Typhoon Butchoy , was recognized Know as the second typhoon of the 2008 Pacific typhoon season by the Japan Meteorological Agency ( JMA ) and the Philippine Atmospheric , Geophysical and Astronomical Services Administration ( PAGASA ) .

On May 7 both the JTWC and the Japan Meteorological Agency designated Choosing the disturbance as a tropical depression , while PAGASA named Name_conferral the depression Butchoy .