M 4.5 earthquake: North Pacific Ocean (Northern Mariana Islands) — December 20, 1976

M 4.5 earthquake: North Pacific Ocean (Northern Mariana Islands) — December 20, 1976. Epicenter 494 km N of Capitol Hill, depth 71 km, 07:27 Local (1976-12-19 21:27 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (494 km N, Northern Mariana Islands) — 19.647, 145.56

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