M 4.5 earthquake: North Atlantic Ocean (Portugal) — August 24, 1983

M 4.5 earthquake: North Atlantic Ocean (Portugal) — August 24, 1983. Epicenter 923 km N of Angra do Heroísmo, depth 10 km, 03:02 Local (1983-08-24 05:02 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (923 km N, Portugal) — 46.945, -27.485

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