M 4.6 earthquake: North Pacific Ocean (Northern Mariana Islands) — June 20, 1988

M 4.6 earthquake: North Pacific Ocean (Northern Mariana Islands) — June 20, 1988. Epicenter 414 km N of Capitol Hill, depth 242 km, 01:46 Local (1988-06-19 15:46 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (414 km N, Northern Mariana Islands) — 18.917, 145.395

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