M 4.6 earthquake: Philippine Sea (Agana, Guam) — January 13, 1981

M 4.6 earthquake: Philippine Sea (Agana, Guam) — January 13, 1981. Epicenter 320 km W of Agana, depth 33 km, 09:38 Local (1981-01-13 00:38 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (320 km W of Agana, Guam) — 12.394, 142.012

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