M 4.9 earthquake: North Atlantic Ocean (Portugal) — January 28, 1991

M 4.9 earthquake: North Atlantic Ocean (Portugal) — January 28, 1991. Epicenter 1880 km SW of Horta, depth 10 km, 04:44 Local (1991-01-28 07:44 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (1880 km SW, Portugal) — 27.852, -44.378

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