M 5.6 earthquake: North Atlantic Ocean (Portugal) — May 3, 1984

M 5.6 earthquake: North Atlantic Ocean (Portugal) — May 3, 1984. Epicenter 1040 km SW of Horta, depth 10 km, 20:42 Local (1984-05-03 23:42 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (1040 km SW, Portugal) — 33.719, -38.577

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