• On Aug. 2, 1986, a 7.3-magnitude earthquake shook Casiguran, Aurora, which killed 270 and injured 261 persons. • A 7.8-magnitude earthquake hit parts of Luzon on July 16, 1990, killing 1,200 people, and causing at least P10 billion in property damages. • A 7.2-magnitude earthquake shook Bohol Isla