M 6.3 earthquake: North Pacific Ocean (Japan) — September 3, 1921

M 6.3 earthquake: North Pacific Ocean (Japan) — September 3, 1921. Epicenter 409 km SE of Yokohama, depth 15 km, 18:57 Local (1921-09-03 08:57 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (409 km SE, Japan) — 32.731, 142.615

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