M 4.7 earthquake: North Pacific Ocean (Northern Mariana Islands) — March 15, 1987

M 4.7 earthquake: North Pacific Ocean (Northern Mariana Islands) — March 15, 1987. Epicenter 430 km N of Capitol Hill, depth 33 km, 18:17 Local (1987-03-15 08:17 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (430 km N, Northern Mariana Islands) — 18.89, 147.003

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