M 5.0 earthquake: North Atlantic Ocean (Portugal) — September 9, 1974

M 5.0 earthquake: North Atlantic Ocean (Portugal) — September 9, 1974. Epicenter 832 km SW of Horta, depth 33 km, 15:58 Local (1974-09-09 17:58 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (832 km SW, Portugal) — 34.6, -36.58

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