M 4.8 earthquake: Philippine Sea (Agana, Guam) — October 1, 1981

M 4.8 earthquake: Philippine Sea (Agana, Guam) — October 1, 1981. Epicenter 446 km SW of Agana, depth 51 km, 05:16 Local (1981-09-30 20:16 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (446 km SW of Agana, Guam) — 10.785, 141.702

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