M 5.0 earthquake: North Atlantic Ocean (Portugal) — March 4, 1997

M 5.0 earthquake: North Atlantic Ocean (Portugal) — March 4, 1997. Epicenter 839 km SW of Horta, depth 10 km, 19:41 Local (1997-03-04 21:41 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (839 km SW, Portugal) — 34.504, -36.591

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