M 4.6 earthquake: North Pacific Ocean (Northern Mariana Islands) — August 28, 1987

M 4.6 earthquake: North Pacific Ocean (Northern Mariana Islands) — August 28, 1987. Epicenter 437 km N of Capitol Hill, depth 33 km, 11:48 Local (1987-08-28 01:48 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (437 km N, Northern Mariana Islands) — 19.115, 145.268

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