M 4.5 earthquake: North Atlantic Ocean (Portugal) — August 6, 1986

M 4.5 earthquake: North Atlantic Ocean (Portugal) — August 6, 1986. Epicenter 630 km N of Angra do Heroísmo, depth 10 km, 17:06 Local (1986-08-06 19:06 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (630 km N, Portugal) — 44.243, -28.415

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