M 5.3 earthquake: Philippine Sea (Agana, Guam) — December 31, 1976

M 5.3 earthquake: Philippine Sea (Agana, Guam) — December 31, 1976. Epicenter 154 km SW of Agana, depth 22 km, 06:01 Local (1976-12-30 20:01 UTC). Shaking felt by ~122K people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (154 km SW of Agana, Guam) — 12.318, 143.957

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