M 5.1 earthquake: North Atlantic Ocean (Portugal) — April 20, 2004

M 5.1 earthquake: North Atlantic Ocean (Portugal) — April 20, 2004. Epicenter 1143 km SW of Horta, depth 10 km, 22:20 Local (2004-04-21 01:20 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (1143 km SW, Portugal) — 32.935, -39.283

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