M 4.7 earthquake: North Pacific Ocean (Northern Mariana Islands) — April 7, 1987

M 4.7 earthquake: North Pacific Ocean (Northern Mariana Islands) — April 7, 1987. Epicenter 475 km N of Capitol Hill, depth 69 km, 04:56 Local (1987-04-06 18:56 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (475 km N, Northern Mariana Islands) — 19.406, 146.606

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