M 4.8 earthquake: North Atlantic Ocean (Portugal) — January 28, 1991

M 4.8 earthquake: North Atlantic Ocean (Portugal) — January 28, 1991. Epicenter 1991 km SW of Horta, depth 10 km, 03:40 Local (1991-01-28 06:40 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (1991 km SW, Portugal) — 26.636, -44.609

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