M 5.4 earthquake: North Pacific Ocean (Japan) — January 4, 1980

M 5.4 earthquake: North Pacific Ocean (Japan) — January 4, 1980. Epicenter 263 km N of Naha, depth 134 km, 04:58 Local (1980-01-03 19:58 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (263 km N, Japan) — 28.485, 128.381

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