M 4.9 earthquake: North Pacific Ocean (Northern Mariana Islands) — September 21, 1986

M 4.9 earthquake: North Pacific Ocean (Northern Mariana Islands) — September 21, 1986. Epicenter 260 km NE of Capitol Hill, depth 56 km, 23:22 Local (1986-09-21 13:22 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (260 km NE, Northern Mariana Islands) — 16.957, 147.365

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