M 4.9 Earthquake: North Atlantic Ocean (Portugal) — March 15, 1984

M 4.9 Earthquake: North Atlantic Ocean (Portugal) — March 15, 1984. Epicenter 1788 km SW of Horta, depth 10 km, 20:18 Local (1984-03-15 23:18 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (1788 km SW, Portugal) — 28.488, -43.767

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