M 4.8 earthquake: North Atlantic Ocean (Portugal) — November 28, 1974

M 4.8 earthquake: North Atlantic Ocean (Portugal) — November 28, 1974. Epicenter 312 km W of Horta, depth 33 km, 11:33 Local (1974-11-28 13:33 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (312 km W, Portugal) — 37.564, -31.991

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