M 4.5 earthquake: North Atlantic Ocean (Portugal) — September 3, 2023

M 4.5 earthquake: North Atlantic Ocean (Portugal) — September 3, 2023. Epicenter 698 km SW of Horta, depth 10 km, 22:54 Local (2023-09-04 00:54 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (698 km SW, Portugal) — 35.5054, -35.5396

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