M 5.6 earthquake: North Pacific Ocean (Northern Mariana Islands) — June 18, 1977

M 5.6 earthquake: North Pacific Ocean (Northern Mariana Islands) — June 18, 1977. Epicenter 426 km N of Capitol Hill, depth 108 km, 00:45 Local (1977-06-17 14:45 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (426 km N, Northern Mariana Islands) — 19.043, 145.689

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