M 7.5 earthquake: North Pacific Ocean (Northern Mariana Islands) — January 17, 1940

M 7.5 earthquake: North Pacific Ocean (Northern Mariana Islands) — January 17, 1940. Epicenter 327 km NE of Capitol Hill, depth 15 km, 11:14 Local (1940-01-17 01:14 UTC). Shaking felt by ~125K people. Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (327 km NE, Northern Mariana Islands) — 17.139, 148.059

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