M 4.5 earthquake: Philippine Sea (Zamboanga, Philippines) — February 20, 1976

M 4.5 earthquake: Philippine Sea (Zamboanga, Philippines) — February 20, 1976. Epicenter 147 km E of Zamboanga, depth 649 km, 23:32 Local (1976-02-20 15:32 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (147 km E of Zamboanga, Philippines) — 6.541, 123.355

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