Earthquakes in Manila
Manila, the capital of the Philippines with 14 million people in Metro Manila, is considered one of the most earthquake-vulnerable capitals in the world. The West Valley Fault runs directly through densely populated eastern suburbs, and PHIVOLCS estimates an M7.2 earthquake on this fault would cause over 50,000 deaths in Metro Manila.
Why Does Manila Face Earthquake Risk?
Metro Manila is bounded by the West Valley Fault on the east, a 100-km-long active strike-slip fault that last ruptured around 1658. The Philippine Sea Plate and Eurasian Plate collision makes the archipelago one of the world's most seismically active regions. Over 14 million people live in the fault's potential damage zone.
Active Fault Systems
- West Valley Fault
- Philippine Fault Zone
- Manila Trench
Safety Advice
PHIVOLCS provides earthquake alerts and maintains detailed hazard maps. Download the Agos app for NDRRMC alerts. The West Valley Fault Awareness campaign recommends evacuation drills and earthquake kits for all Metro Manila residents.
Historical Earthquake Context
The Philippines experiences approximately 7,000 earthquakes annually, of which 500 are felt. Manila was damaged by the 1880 Luzon earthquake (M7.6) and the 1990 Luzon earthquake (M7.8) killed 1,621 people north of Manila.
Fault Maps & Tectonic Setting
Tectonic and seismic hazard maps from Wikimedia Commons, USGS, and NASA — open licenses (CC / Public Domain)
Maps sourced from Wikimedia Commons, USGS, and NASA under open licenses. Attribution required where specified. Click any map to enlarge.
FAQ
Frequently Asked Questions
What is the West Valley Fault risk for Manila?
The West Valley Fault is a 100-km active fault system crossing densely populated areas from Quezon City through Marikina, Pasig, and Muntinlupa. PHIVOLCS estimates that when it ruptures in an M7.2 earthquake, it could kill 34,000-50,000 people and displace 1.8 million in Metro Manila.
How seismically active is Manila?
Metro Manila experiences hundreds of small earthquakes per year, most imperceptible. The West Valley Fault, passing directly through the densely populated urban area, is capable of a M7.2+ earthquake. The Philippine Institute of Volcanology and Seismology (PHIVOLCS) estimates the West Valley Fault last ruptured approximately 1,400-1,500 years ago.
Is Manila prepared for a major West Valley Fault earthquake?
The Philippine government's Metro Manila earthquake impact reduction study (MMEIRS) projects up to 34,000 deaths and 100,000 injuries in a worst-case West Valley Fault rupture. Manila has been expanding earthquake preparedness drills, building code enforcement, and informal settlement hazard assessments, but implementation gaps remain significant.
What should I do during an earthquake in Manila?
Drop, Cover, and Hold On. In the dense urban environment of Metro Manila, do not run into streets during shaking — debris from buildings is a major hazard. After shaking, exit carefully and move to open ground away from structures. PHIVOLCS (phivolcs.dost.gov.ph) and NDRRMC provide official guidance and alerts.
Where can I see live earthquake data for Manila?
Track earthquakes near Manila on the Earthquake Globe app or at earthquakes.site/map?country=philippines. PHIVOLCS (phivolcs.dost.gov.ph) provides real-time Philippine earthquake data. USGS also provides English-language data at earthquake.usgs.gov for regional events.
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