M 4.6 earthquake: Philippine Sea (Agana, Guam) — January 28, 1990

M 4.6 earthquake: Philippine Sea (Agana, Guam) — January 28, 1990. Epicenter 194 km W of Agana, depth 140 km, 09:14 Local (1990-01-27 23:14 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (194 km W of Agana, Guam) — 12.963, 143.034

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