M 4.9 earthquake: Philippine Sea (General Santos, Philippines) — December 13, 1978

M 4.9 earthquake: Philippine Sea (General Santos, Philippines) — December 13, 1978. Epicenter 99 km SE of General Santos, depth 156 km, 00:34 Local (1978-12-12 16:34 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (99 km SE of General Santos, Philippines) — 5.345, 125.633

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