M 5.4 earthquake: Philippine Sea (Agana, Guam) — December 31, 1976

M 5.4 earthquake: Philippine Sea (Agana, Guam) — December 31, 1976. Epicenter 154 km SW of Agana, depth 31 km, 04:26 Local (1976-12-30 18:26 UTC). Shaking felt by ~122K people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (154 km SW of Agana, Guam) — 12.307, 143.975

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