M 5.1 earthquake: Philippine Sea (Agana, Guam) — July 18, 1978

M 5.1 earthquake: Philippine Sea (Agana, Guam) — July 18, 1978. Epicenter 242 km SW of Agana, depth 33 km, 22:02 Local (1978-07-18 12:02 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (242 km SW of Agana, Guam) — 11.778, 143.353

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