M 4.8 Earthquake: North Atlantic Ocean (Portugal) — May 23, 1997

M 4.8 Earthquake: North Atlantic Ocean (Portugal) — May 23, 1997. Epicenter 932 km SW of Horta, depth 10 km, 17:57 Local (1997-05-23 19:57 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (932 km SW, Portugal) — 33.865, -37.283

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