M 4.8 earthquake: North Pacific Ocean (Japan) — April 20, 1997

M 4.8 earthquake: North Pacific Ocean (Japan) — April 20, 1997. Epicenter 464 km SE of Yokohama, depth 33 km, 14:50 Local (1997-04-20 05:50 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (464 km SE, Japan) — 31.616, 141.629

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