The Big One

  • A Metro Manila risk assessment estimated that a magnitude 7.2 earthquake on the WVF (a probable maximum scenario, so-called “The Big One”), could result in an estimated 48,000 fatalities, and $48 billion in economic losses. World Bank Blog

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Reinforcing steel bars beside an engineering blueprint and seismic waveform representing Part 1 of the PNS 49:2026 timeline in the Philippines.
Reinforcing steel and engineering documents representing the industry campaign to make PNS 49:2026 mandatory in the Philippines.

List of Establishments Located Near the West Valley Fault Line



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Featured Posts

The West Valley Fault is one of the Philippines’ most significant geological threats, capable of generating a magnitude 7.2 earthquake known as “The Big One,” which could severely impact Metro Manila and nearby densely populated areas. Although experts cannot predict exactly when such an earthquake will occur, they emphasize the importance of preparedness and awareness. This guide examines the science behind the West Valley Fault, the Metro Manila Earthquake Scenario, the areas most at risk, lessons from past destructive earthquakes, expert insights on The Big One, practical preparedness measures, and answers to frequently asked questions about one of the country’s most serious natural hazards.

When an Earthquake Strikes, Will you Be Prepared?

Knowing that our country is prone to earthquakes and knowing as well that a Big One has been predicted for some time now merits some preparation and planning. It is crucial that the entire family has been briefed on what to do when the inevitable strikes. Plans should be in place on what to do during, before and after the earthquake.

Safety Checklists

Earthquake Safety Checklist ↗

Tips and warnings on what to do before, during and after an earthquake.

House Safety Checklist ↗

Assess how safe is your house with this checklist.

Earthquake Card ↗

Earthquake safety guidelines from Safesteps.com