M 4.9 earthquake: North Atlantic Ocean (Portugal) — February 4, 1991

M 4.9 earthquake: North Atlantic Ocean (Portugal) — February 4, 1991. Epicenter 1976 km SW of Horta, depth 10 km, 10:20 Local (1991-02-04 13:20 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (1976 km SW, Portugal) — 26.877, -44.665

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