M 4.6 earthquake: North Pacific Ocean (Northern Mariana Islands) — May 5, 1977

M 4.6 earthquake: North Pacific Ocean (Northern Mariana Islands) — May 5, 1977. Epicenter 432 km N of Capitol Hill, depth 275 km, 09:55 Local (1977-05-04 23:55 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (432 km N, Northern Mariana Islands) — 19.034, 145.034

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