M 5.5 earthquake: Philippine Sea (Agana, Guam) — May 5, 1991

M 5.5 earthquake: Philippine Sea (Agana, Guam) — May 5, 1991. Epicenter 37 km NE of Agana, depth 116 km, 07:28 Local (1991-05-04 21:28 UTC). Shaking felt by ~125K people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (37 km NE of Agana, Guam) — 13.717, 144.981

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