M 4.6 earthquake: North Pacific Ocean (Northern Mariana Islands) — December 14, 1991

M 4.6 earthquake: North Pacific Ocean (Northern Mariana Islands) — December 14, 1991. Epicenter 277 km N of Capitol Hill, depth 273 km, 02:27 Local (1991-12-13 16:27 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (277 km N, Northern Mariana Islands) — 17.691, 145.537

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