M 5.4 earthquake: North Atlantic Ocean (Portugal) — October 26, 1986

M 5.4 earthquake: North Atlantic Ocean (Portugal) — October 26, 1986. Epicenter 819 km N of Angra do Heroísmo, depth 10 km, 22:09 Local (1986-10-27 00:09 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (819 km N, Portugal) — 46.009, -27.624

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