M 4.7 earthquake: North Pacific Ocean (Northern Mariana Islands) — August 8, 1978

M 4.7 earthquake: North Pacific Ocean (Northern Mariana Islands) — August 8, 1978. Epicenter 387 km N of Capitol Hill, depth 115 km, 21:31 Local (1978-08-08 11:31 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (387 km N, Northern Mariana Islands) — 18.686, 145.911

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