M 4.8 earthquake: North Atlantic Ocean (Portugal) — June 11, 1977

M 4.8 earthquake: North Atlantic Ocean (Portugal) — June 11, 1977. Epicenter 1058 km SW of Horta, depth 33 km, 17:33 Local (1977-06-11 20:33 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (1058 km SW, Portugal) — 33.92, -38.972

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