M 4.6 earthquake: Philippine Sea (Agana, Guam) — January 30, 1988

M 4.6 earthquake: Philippine Sea (Agana, Guam) — January 30, 1988. Epicenter 171 km W of Agana, depth 211 km, 23:13 Local (1988-01-30 13:13 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (171 km W of Agana, Guam) — 13.3, 143.182

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