M 4.7 earthquake: North Atlantic Ocean (Portugal) — May 4, 1973

M 4.7 earthquake: North Atlantic Ocean (Portugal) — May 4, 1973. Epicenter 1424 km SW of Horta, depth 33 km, 11:02 Local (1973-05-04 14:02 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (1424 km SW, Portugal) — 31.121, -41.401

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