M 4.6 earthquake: North Pacific Ocean (Japan) — August 21, 2018

M 4.6 earthquake: North Pacific Ocean (Japan) — August 21, 2018. Epicenter 309 km S of Yokohama, depth 59 km, 16:46 Local (2018-08-21 07:46 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (309 km S, Japan) — 32.819, 140.7641

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