M 4.6 earthquake: North Pacific Ocean (Japan) — October 6, 2023

M 4.6 earthquake: North Pacific Ocean (Japan) — October 6, 2023. Epicenter 538 km S of Hamamatsu, depth 10 km, 01:58 Local (2023-10-05 16:58 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (538 km S, Japan) — 30.1963, 139.7874

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