M 4.6 earthquake: Philippine Sea (Agana, Guam) — March 18, 1988

M 4.6 earthquake: Philippine Sea (Agana, Guam) — March 18, 1988. Epicenter 36 km N of Agana, depth 139 km, 10:54 Local (1988-03-18 00:54 UTC). Shaking felt by ~122K people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (36 km N of Agana, Guam) — 13.785, 144.678

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