M 4.9 earthquake: Philippine Sea (Agana, Guam) — January 28, 1991

M 4.9 earthquake: Philippine Sea (Agana, Guam) — January 28, 1991. Epicenter 29 km N of Agana, depth 96 km, 02:02 Local (1991-01-27 16:02 UTC). Shaking felt by ~122K people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (29 km N of Agana, Guam) — 13.724, 144.828

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