M 4.9 earthquake: North Atlantic Ocean (Portugal) — April 7, 1975

M 4.9 earthquake: North Atlantic Ocean (Portugal) — April 7, 1975. Epicenter 463 km N of Horta, depth 33 km, 23:51 Local (1975-04-08 01:51 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (463 km N, Portugal) — 42.672, -29.307

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