M 5.1 earthquake: North Atlantic Ocean (Portugal) — September 17, 2026

M 5.1 earthquake: North Atlantic Ocean (Portugal) — September 17, 2026. Epicenter 1548 km SW of Horta, depth 10 km, 16:19 Local (2026-09-17 19:19 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (1548 km SW, Portugal) — 30.1619, -42.1489

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