M 4.7 earthquake: Philippine Sea (Agana, Guam) — October 8, 1973

M 4.7 earthquake: Philippine Sea (Agana, Guam) — October 8, 1973. Epicenter 281 km SW of Agana, depth 23 km, 20:37 Local (1973-10-08 10:37 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (281 km SW of Agana, Guam) — 11.216, 143.575

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