M 5.5 earthquake: Philippine Sea (Agana, Guam) — July 27, 1981

M 5.5 earthquake: Philippine Sea (Agana, Guam) — July 27, 1981. Epicenter 377 km SW of Agana, depth 55 km, 05:50 Local (1981-07-26 20:50 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (377 km SW of Agana, Guam) — 11.88, 141.681

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