M 4.8 earthquake: Philippine Sea (Agana, Guam) — March 9, 1987

M 4.8 earthquake: Philippine Sea (Agana, Guam) — March 9, 1987. Epicenter 200 km SW of Agana, depth 33 km, 22:33 Local (1987-03-09 12:33 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (200 km SW of Agana, Guam) — 12.173, 143.474

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