M 4.6 earthquake: North Atlantic Ocean (Portugal) — October 19, 1974

M 4.6 earthquake: North Atlantic Ocean (Portugal) — October 19, 1974. Epicenter 1436 km SW of Horta, depth 33 km, 12:00 Local (1974-10-19 15:00 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (1436 km SW, Portugal) — 31.002, -41.451

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