M 4.5 earthquake: North Atlantic Ocean (Portugal) — January 31, 1984

M 4.5 earthquake: North Atlantic Ocean (Portugal) — January 31, 1984. Epicenter 1263 km N of Angra do Heroísmo, depth 10 km, 23:39 Local (1984-02-01 01:39 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (1263 km N, Portugal) — 49.887, -29.565

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