M 4.8 earthquake: North Atlantic Ocean (Portugal) — July 27, 1983

M 4.8 earthquake: North Atlantic Ocean (Portugal) — July 27, 1983. Epicenter 406 km W of Horta, depth 10 km, 08:17 Local (1983-07-27 10:17 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (406 km W, Portugal) — 37.148, -32.917

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