M 4.8 earthquake: North Pacific Ocean (Northern Mariana Islands) — April 28, 1991

M 4.8 earthquake: North Pacific Ocean (Northern Mariana Islands) — April 28, 1991. Epicenter 412 km N of Capitol Hill, depth 151 km, 02:35 Local (1991-04-27 16:35 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (412 km N, Northern Mariana Islands) — 18.918, 145.851

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