M 5.0 earthquake: North Pacific Ocean (Northern Mariana Islands) — July 21, 1983

M 5.0 earthquake: North Pacific Ocean (Northern Mariana Islands) — July 21, 1983. Epicenter 342 km N of Capitol Hill, depth 33 km, 12:51 Local (1983-07-21 02:51 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (342 km N, Northern Mariana Islands) — 18.278, 145.548

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