M 4.9 earthquake: North Pacific Ocean (Japan) — August 4, 1984

M 4.9 earthquake: North Pacific Ocean (Japan) — August 4, 1984. Epicenter 409 km SE of Shizuoka, depth 74 km, 21:12 Local (1984-08-04 12:12 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (409 km SE, Japan) — 31.666, 140.273

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