M 4.9 earthquake: North Atlantic Ocean (Portugal) — May 16, 1975

M 4.9 earthquake: North Atlantic Ocean (Portugal) — May 16, 1975. Epicenter 581 km N of Horta, depth 33 km, 00:29 Local (1975-05-16 02:29 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (581 km N, Portugal) — 43.759, -28.927

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