10/10/2025
Metro Cebu - an earthquake-prone area.
The CENTRAL CEBU FAULTLINE SYSTEM has the potential to generate strong to major earthquakes ranging from magnitude 6.4 to 7.1 with the epicenter possibly located within Metro Cebu, a rapidly growing and dynamic metropolis.
β Central Cebu Fault System transects Danao City, Compostela, Cebu City, Talisay City, Minglanilla, Naga City, Balamban and Toledo City.
Four major faults of the Central Cebu Fault System were identified based on length and last known occurrence of faulting. These are, from north to southβ¦
β Balamban Fault, (can generate M6.4-6.9)
β Central Highland Fault, (can generate M6.4-6.9)
β Uling-Masaba Fault, ( generate M7.1)
β Lutac-Jaclupan Fault (can generate M6.4-6.9)
The Uling-Masaba Fault is the longest among the major faults, with a 50 km fault line. It can be traced as far southwest as Rosario
The Lutac-Jaclupan Fault is the southeasternmost major fault of the Central Cebu Fault System and is 36 km long. Extends further northeast to Sirao as the contact between the Mananga Group in the northwest block and the Bulacao Andesite and Malubog Formation in the southeast block.
POTENTIAL STRENGTH
β Based on their surface rupture lengths, the Uling-Masaba Fault can potentially generate a Magnitude 7.1 (major) earthquake, comparable to the 2013 Magnitude 7.2 Bohol earthquake
β while the others can potentially generate Magnitude 6.4 to 6.9 (strong) earthquakes, comparable to the 2012 MW 6.7 Negros Oriental earthquake
THREE Strong Earthquakes from nearby faultlines already shook Metro Cebu Violently.
These areβ¦
βͺοΈMagnitude 6.7 Negros quake (Feb 6, 2012)(generated Chona Mae scare)
βͺοΈMagnitude 7.2 Bohol quake (Oct 15, 2013) (15 people died in Metro Cebu)
βͺοΈ Magnitude 6.9 Cebu quake (Sept 30, 2025)
NOTE: This message is not meant to create fear, but to offer guidance, encouraging us to stay informed and prepared for potential natural hazards. In Japan, for example, earthquake awareness is part of daily life, reminding everyone of the importance of readiness.
Sources: PHIVOLCS / Science Direct
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