M 5.0 earthquake: North Pacific Ocean (Japan) — December 13, 1984

M 5.0 earthquake: North Pacific Ocean (Japan) — December 13, 1984. Epicenter 674 km SE of Hamamatsu, depth 77 km, 07:59 Local (1984-12-12 22:59 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (674 km SE, Japan) — 29.35, 141.047

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