M 4.7 earthquake: Philippine Sea (Agana, Guam) — April 8, 1978

M 4.7 earthquake: Philippine Sea (Agana, Guam) — April 8, 1978. Epicenter 180 km SW of Agana, depth 33 km, 21:40 Local (1978-04-08 11:40 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (180 km SW of Agana, Guam) — 12.129, 143.823

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