M 5.4 earthquake: North Pacific Ocean (Northern Mariana Islands) — October 6, 1987

M 5.4 earthquake: North Pacific Ocean (Northern Mariana Islands) — October 6, 1987. Epicenter 397 km N of Capitol Hill, depth 514 km, 10:50 Local (1987-10-06 00:50 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (397 km N, Northern Mariana Islands) — 18.711, 145.016

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