M 4.5 earthquake: North Pacific Ocean (Japan) — September 20, 2023

M 4.5 earthquake: North Pacific Ocean (Japan) — September 20, 2023. Epicenter 496 km SE of Yokohama, depth 10 km, 07:01 Local (2023-09-19 22:01 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (496 km SE, Japan) — 31.3227, 141.6721

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