M 4.6 earthquake: North Pacific Ocean (Japan) — October 21, 2023

M 4.6 earthquake: North Pacific Ocean (Japan) — October 21, 2023. Epicenter 446 km SE of Yokohama, depth 10 km, 11:42 Local (2023-10-21 02:42 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (446 km SE, Japan) — 31.8873, 141.8711

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