M 5.1 earthquake: North Atlantic Ocean (Portugal) — July 28, 1997

M 5.1 earthquake: North Atlantic Ocean (Portugal) — July 28, 1997. Epicenter 846 km SW of Horta, depth 10 km, 21:29 Local (1997-07-28 23:29 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (846 km SW, Portugal) — 34.566, -36.729

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