M 4.6 earthquake: North Atlantic Ocean (Portugal) — October 19, 1983

M 4.6 earthquake: North Atlantic Ocean (Portugal) — October 19, 1983. Epicenter 958 km N of Angra do Heroísmo, depth 10 km, 06:00 Local (1983-10-19 08:00 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (958 km N, Portugal) — 47.263, -27.381

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