M 5.0 earthquake: Philippine Sea (Cotabato, Philippines) — December 21, 1987

M 5.0 earthquake: Philippine Sea (Cotabato, Philippines) — December 21, 1987. Epicenter 63 km SW of Cotabato, depth 593 km, 06:41 Local (1987-12-20 22:41 UTC). Shaking felt by ~545K people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (63 km SW of Cotabato, Philippines) — 6.826, 123.832

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