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7.8-Magnitude Cotabato Trench Quake Hits General Santos, Tsunami Warning Lifted

6/8/2026

Summary

Story summary

PHIVOLCS says the magnitude 7.8 quake on Monday was caused by subduction along the Cotabato Trench, also responsible for the 1976 Moro Gulf quake.
The strongest shaking hit General Santos City, prompting officials to lift the tsunami warning after waves reached 1.4 meters in Kiamba, Sarangani.
PHIVOLCS warned aftershocks may last days to weeks and urged residents to practice Drop, Cover, Hold, report damage and avoid reoccupying buildings until cleared.

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Story summary

PHIVOLCS says the magnitude 7.8 quake on Monday was caused by subduction along the Cotabato Trench, also responsible for the 1976 Moro Gulf quake.
The strongest shaking hit General Santos City, prompting officials to lift the tsunami warning after waves reached 1.4 meters in Kiamba, Sarangani.
PHIVOLCS warned aftershocks may last days to weeks and urged residents to practice Drop, Cover, Hold, report damage and avoid reoccupying buildings until cleared.