M 4.8 Earthquake: North Pacific Ocean (Northern Mariana Islands) — July 7, 1991

M 4.8 Earthquake: North Pacific Ocean (Northern Mariana Islands) — July 7, 1991. Epicenter 412 km NE of Capitol Hill, depth 33 km, 19:28 Local (1991-07-07 09:28 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (412 km NE, Northern Mariana Islands) — 18.423, 147.681

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