M 4.7 earthquake: Philippine Sea (Agana, Guam) — June 13, 1987

M 4.7 earthquake: Philippine Sea (Agana, Guam) — June 13, 1987. Epicenter 188 km SW of Agana, depth 21 km, 06:51 Local (1987-06-12 20:51 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (188 km SW of Agana, Guam) — 12.187, 143.618

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