M 4.7 earthquake: North Atlantic Ocean (Portugal) — May 4, 1987

M 4.7 earthquake: North Atlantic Ocean (Portugal) — May 4, 1987. Epicenter 929 km N of Angra do Heroísmo, depth 10 km, 22:10 Local (1987-05-05 00:10 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (929 km N, Portugal) — 47.007, -27.419

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