Magnitude 4.9 earthquake hits Don Marcelino town in Davao Occidental. MANILA, Philippines — A magnitude 4.9 earthquake jolted Don Marcelino town in Davao Occidental on Friday evening, Oct. 16, according to the Philippine Institute of Volcanology and Seismology (Phivolcs). In its advisory, Phivolcs said the epicenter was located 68 kilometers (km) southeast of Don Marcelino, Davao Occidental. It said the tremors were felt at 8:18.