M 4.7 earthquake: North Pacific Ocean (Japan) — February 20, 1982

M 4.7 earthquake: North Pacific Ocean (Japan) — February 20, 1982. Epicenter 277 km N of Naha, depth 33 km, 13:17 Local (1982-02-20 04:17 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (277 km N, Japan) — 28.628, 128.317

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