Cebu Earthquake: Tracing Surface Rupture and What It Means The magnitude 6.9 Cebu earthquake on September 30, 2025, left more than ground shaking—it exposed a surface rupture zone in northern Cebu. With a shallow focus of about 5 kilometers, geologists from the Philippine Institute of Volcanology and Seismology (Phivolcs) identified a new fault, later named…