M 4.5 earthquake: North Atlantic Ocean (Portugal) — November 11, 1983

M 4.5 earthquake: North Atlantic Ocean (Portugal) — November 11, 1983. Epicenter 677 km N of Angra do Heroísmo, depth 10 km, 04:27 Local (1983-11-11 06:27 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (677 km N, Portugal) — 44.698, -28.109

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