M 4.9 earthquake: North Pacific Ocean (Japan) — September 21, 1999

M 4.9 earthquake: North Pacific Ocean (Japan) — September 21, 1999. Epicenter 311 km SE of Yokohama, depth 33 km, 23:21 Local (1999-09-21 14:21 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (311 km SE, Japan) — 33.061, 141.402

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