M 5.3 earthquake: Philippine Sea (Cotabato, Philippines) — April 4, 1978

M 5.3 earthquake: Philippine Sea (Cotabato, Philippines) — April 4, 1978. Epicenter 70 km SW of Cotabato, depth 46 km, 22:14 Local (1978-04-04 14:14 UTC). Shaking felt by ~8.6M people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (70 km SW of Cotabato, Philippines) — 6.779, 123.796

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