M 4.7 earthquake: North Atlantic Ocean (Portugal) — September 1, 1975

M 4.7 earthquake: North Atlantic Ocean (Portugal) — September 1, 1975. Epicenter 588 km N of Horta, depth 33 km, 01:41 Local (1975-09-01 03:41 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (588 km N, Portugal) — 43.808, -29.178

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