M 4.9 earthquake: North Pacific Ocean (Northern Mariana Islands) — September 17, 1986

M 4.9 earthquake: North Pacific Ocean (Northern Mariana Islands) — September 17, 1986. Epicenter 492 km N of Capitol Hill, depth 33 km, 13:44 Local (1986-09-17 03:44 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (492 km N, Northern Mariana Islands) — 19.574, 146.51

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