M 5.3 earthquake: Philippine Sea (Zamboanga, Philippines) — October 8, 1981

M 5.3 earthquake: Philippine Sea (Zamboanga, Philippines) — October 8, 1981. Epicenter 223 km SE of Zamboanga, depth 595 km, 01:48 Local (1981-10-07 17:48 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (223 km SE of Zamboanga, Philippines) — 5.21, 123.128

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