M 4.9 earthquake: North Atlantic Ocean (Portugal) — March 21, 2023

M 4.9 earthquake: North Atlantic Ocean (Portugal) — March 21, 2023. Epicenter 1771 km SW of Horta, depth 10 km, 17:48 Local (2023-03-21 20:48 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (1771 km SW, Portugal) — 28.6921, -43.7393

EarthquakeLive.org