M 5.3 earthquake: Philippine Sea (Agana, Guam) — March 30, 1978

M 5.3 earthquake: Philippine Sea (Agana, Guam) — March 30, 1978. Epicenter 131 km SW of Agana, depth 9 km, 12:42 Local (1978-03-30 02:42 UTC). Shaking felt by ~122K people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (131 km SW of Agana, Guam) — 12.562, 143.983

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