M 4.8 earthquake: Philippine Sea (Agana, Guam) — July 29, 1987

M 4.8 earthquake: Philippine Sea (Agana, Guam) — July 29, 1987. Epicenter 54 km S of Agana, depth 77 km, 07:33 Local (1987-07-28 21:33 UTC). Shaking felt by ~122K people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (54 km S of Agana, Guam) — 13.012, 144.929

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