M 4.7 earthquake: Philippine Sea (Agana, Guam) — June 23, 1991

M 4.7 earthquake: Philippine Sea (Agana, Guam) — June 23, 1991. Epicenter 93 km S of Agana, depth 33 km, 14:54 Local (1991-06-23 04:54 UTC). Shaking felt by ~122K people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (93 km S of Agana, Guam) — 12.644, 144.852

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