M 4.9 earthquake: Philippine Sea (Agana, Guam) — April 23, 1989

M 4.9 earthquake: Philippine Sea (Agana, Guam) — April 23, 1989. Epicenter 25 km S of Agana, depth 56 km, 00:53 Local (1989-04-22 14:53 UTC). Shaking felt by ~122K people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (25 km S of Agana, Guam) — 13.246, 144.738

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