M 4.5 earthquake: North Atlantic Ocean (Portugal) — September 8, 1984

M 4.5 earthquake: North Atlantic Ocean (Portugal) — September 8, 1984. Epicenter 286 km W of Horta, depth 10 km, 15:26 Local (1984-09-08 15:26 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (286 km W, Portugal) — 37.573, -31.678

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