M 4.6 earthquake: North Atlantic Ocean (Portugal) — April 14, 1991

M 4.6 earthquake: North Atlantic Ocean (Portugal) — April 14, 1991. Epicenter 274 km W of Horta, depth 10 km, 00:13 Local (1991-04-14 00:13 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (274 km W, Portugal) — 38.166, -31.753

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