M 4.5 earthquake: North Atlantic Ocean (Portugal) — May 24, 1975

M 4.5 earthquake: North Atlantic Ocean (Portugal) — May 24, 1975. Epicenter 869 km SW of Horta, depth 33 km, 00:37 Local (1975-05-24 02:37 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (869 km SW, Portugal) — 34.476, -36.958

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