M 4.7 earthquake: North Atlantic Ocean (Portugal) — April 8, 1975

M 4.7 earthquake: North Atlantic Ocean (Portugal) — April 8, 1975. Epicenter 434 km N of Horta, depth 33 km, 04:43 Local (1975-04-08 06:43 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (434 km N, Portugal) — 42.403, -29.346

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