M 4.8 earthquake: North Atlantic Ocean (Portugal) — November 28, 1977

M 4.8 earthquake: North Atlantic Ocean (Portugal) — November 28, 1977. Epicenter 1504 km SW of Horta, depth 33 km, 02:35 Local (1977-11-28 05:35 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (1504 km SW, Portugal) — 30.552, -41.935

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