M 4.9 earthquake: Philippine Sea (Agana, Guam) — July 28, 1978

M 4.9 earthquake: Philippine Sea (Agana, Guam) — July 28, 1978. Epicenter 147 km SW of Agana, depth 25 km, 01:43 Local (1978-07-27 15:43 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (147 km SW of Agana, Guam) — 12.601, 143.724

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