Earthquakes in Manila

Manila faces a very high earthquake risk. The Philippine capital lies within the Pacific Ring of Fire, one of the most tectonically violent regions on the planet, where the Philippine Sea plate and the Eurasian plate converge. The West Valley Fault runs directly through the eastern part of Metro Manila, and experts warn it is capable of generating a magnitude 7.2 earthquake, an event local authorities and scientists ominously call "the Big One." With more than 13 million people packed into the metropolitan area, much of it on soft ground and reclaimed land near Manila Bay that can amplify shaking and liquefy, the potential for catastrophe is severe.

The region has repeatedly demonstrated its danger. The 1990 Luzon earthquake, a magnitude 7.8 quake north of Manila, killed more than 1,600 people and caused famous building collapses in Baguio City, while shaking was felt strongly in the capital. Government studies have modeled that a major rupture of the West Valley Fault could kill tens of thousands and damage hundreds of thousands of buildings across Metro Manila. In response, Philippine agencies run public earthquake drills, promote structural retrofitting, and map hazard zones, but rapid urban growth, informal settlements, and older construction mean residents, workers, and visitors should treat earthquake preparedness as a serious priority.