M 4.6 earthquake: North Pacific Ocean (Northern Mariana Islands) — March 16, 1987

M 4.6 earthquake: North Pacific Ocean (Northern Mariana Islands) — March 16, 1987. Epicenter 389 km N of Capitol Hill, depth 82 km, 05:00 Local (1987-03-15 19:00 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (389 km N, Northern Mariana Islands) — 18.662, 146.362

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