M 4.8 earthquake: Philippine Sea (Agana, Guam) — April 12, 1983

M 4.8 earthquake: Philippine Sea (Agana, Guam) — April 12, 1983. Epicenter 151 km SW of Agana, depth 41 km, 20:57 Local (1983-04-12 10:57 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (151 km SW of Agana, Guam) — 12.271, 144.104

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