M 4.5 earthquake: North Pacific Ocean (Northern Mariana Islands) — June 21, 1987

M 4.5 earthquake: North Pacific Ocean (Northern Mariana Islands) — June 21, 1987. Epicenter 297 km N of Capitol Hill, depth 33 km, 08:49 Local (1987-06-20 22:49 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (297 km N, Northern Mariana Islands) — 17.788, 145.004

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