M 4.5 earthquake: North Pacific Ocean (Northern Mariana Islands) — December 28, 1974

M 4.5 earthquake: North Pacific Ocean (Northern Mariana Islands) — December 28, 1974. Epicenter 484 km N of Capitol Hill, depth 270 km, 11:36 Local (1974-12-28 01:36 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (484 km N, Northern Mariana Islands) — 19.551, 145.362

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