M 4.8 earthquake: North Pacific Ocean (Japan) — May 21, 1983

M 4.8 earthquake: North Pacific Ocean (Japan) — May 21, 1983. Epicenter 311 km SE of Kanoya, depth 33 km, 00:42 Local (1983-05-20 15:42 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (311 km SE, Japan) — 28.972, 132.492

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