M 4.6 earthquake: North Pacific Ocean (Northern Mariana Islands) — April 4, 1983

M 4.6 earthquake: North Pacific Ocean (Northern Mariana Islands) — April 4, 1983. Epicenter 588 km N of Capitol Hill, depth 70 km, 15:26 Local (1983-04-04 05:26 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (588 km N, Northern Mariana Islands) — 20.495, 145.494

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