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Manila Bulletin devider Philippines devider National devider Magnitude 6 quake jolts Surigao del Sur; aftershocks, damage expected — Phivolcs

Magnitude 6 quake jolts Surigao del Sur; aftershocks, damage expected — Phivolcs

Published Oct 11, 2025 11:03 pm
A magnitude 6 earthquake struck the waters east of Cagwait, Surigao del Sur, on Saturday night, Oct. 11, the Philippine Institute of Volcanology and Seismology (Phivolcs) reported.
Earlier, the agency reported the quake at magnitude 6.2 but later downgraded it to magnitude 6 based on its Earthquake Information No. 2.
According to the agency, the quake was caused by the movement along the Philippine Trench and not an aftershock of the 7.4- and 6.8-magnitude Davao Oriental quakes.
Phivolcs stated that the tectonic quake occurred at 10:32 p.m.
It added that its epicenter was located 28 kilometers north and 86 kilometers east of Cagwait, Surigao del Sur, at a depth of 24 kilometers.
The agency said the tremor was of tectonic origin, meaning it was generated by the movement of active faults beneath the Earth’s crust.
Phivolcs said damage and aftershocks are expected following the strong quake.
Reported Intensities:
• Intensity IV — Cagwait and Carmen, Surigao del Sur; Cities of Cagayan de Oro, Davao, and Butuan
• Intensity III — Abuyog, Hinunangan, Hinundayan, San Francisco, and Silago, Southern Leyte; Cabanglasan, Don Carlos, Malaybalay City, and San Fernando, Bukidnon; Bislig City, Surigao del Sur; Mati City, Davao Oriental
• Intensity II — Alangalang, Baybay City, Dulag, Javier, and Palo, Leyte; Catbalogan City, Samar; Sogod, Southern Leyte; Libona, Bukidnon; Gingoog City, Misamis Oriental; Surigao City, Surigao del Norte
Instrumental Intensities:
• Intensity IV — Hinunangan, Southern Leyte; Cabadbaran City, Agusan del Norte; Nabunturan, Davao de Oro; Tandag City, Surigao del Sur
• Intensity III — Abuyog and Dulag, Leyte; Hinundayan and Silago, Southern Leyte; San Fernando, Bukidnon; Digos City, Davao del Sur; Gingoog City, Misamis Oriental; Malungon, Sarangani; Bislig City and Surigao City, Surigao del Sur
• Intensity II — Alangalang and Baybay City, Leyte; Sogod, Southern Leyte
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