M 4.6 earthquake: North Atlantic Ocean (Portugal) — May 15, 1974

M 4.6 earthquake: North Atlantic Ocean (Portugal) — May 15, 1974. Epicenter 1917 km SW of Horta, depth 33 km, 10:44 Local (1974-05-15 13:44 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (1917 km SW, Portugal) — 27.368, -44.373

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