M 4.5 earthquake: North Pacific Ocean (Northern Mariana Islands) — May 28, 1978

M 4.5 earthquake: North Pacific Ocean (Northern Mariana Islands) — May 28, 1978. Epicenter 450 km N of Capitol Hill, depth 196 km, 13:38 Local (1978-05-28 03:38 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (450 km N, Northern Mariana Islands) — 19.247, 145.476

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