M 4.5 earthquake: North Atlantic Ocean (Portugal) — October 27, 1986

M 4.5 earthquake: North Atlantic Ocean (Portugal) — October 27, 1986. Epicenter 830 km N of Angra do Heroísmo, depth 10 km, 01:50 Local (1986-10-27 03:50 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (830 km N, Portugal) — 46.107, -27.637

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