M 4.9 earthquake: North Pacific Ocean (Northern Mariana Islands) — April 5, 1977

M 4.9 earthquake: North Pacific Ocean (Northern Mariana Islands) — April 5, 1977. Epicenter 395 km N of Capitol Hill, depth 233 km, 18:28 Local (1977-04-05 08:28 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (395 km N, Northern Mariana Islands) — 18.738, 145.293

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