M 4.6 earthquake: North Pacific Ocean (Japan) — October 4, 2023

M 4.6 earthquake: North Pacific Ocean (Japan) — October 4, 2023. Epicenter 575 km S of Hamamatsu, depth 10 km, 00:18 Local (2023-10-03 15:18 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (575 km S, Japan) — 29.8987, 139.9648

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