M 4.5 earthquake: North Atlantic Ocean (Portugal) — May 29, 1974

M 4.5 earthquake: North Atlantic Ocean (Portugal) — May 29, 1974. Epicenter 320 km N of Horta, depth 33 km, 05:29 Local (1974-05-29 07:29 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (320 km N, Portugal) — 41.335, -29.497

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