M 4.5 earthquake: North Atlantic Ocean (Portugal) — April 22, 1991

M 4.5 earthquake: North Atlantic Ocean (Portugal) — April 22, 1991. Epicenter 1190 km N of Angra do Heroísmo, depth 10 km, 19:40 Local (1991-04-22 21:40 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (1190 km N, Portugal) — 49.315, -28.459

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