M 4.7 earthquake: Philippine Sea (Agana, Guam) — February 1, 1978

M 4.7 earthquake: Philippine Sea (Agana, Guam) — February 1, 1978. Epicenter 74 km SW of Agana, depth 83 km, 21:54 Local (1978-02-01 11:54 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (74 km SW of Agana, Guam) — 12.862, 144.478

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