M 4.6 earthquake: North Atlantic Ocean (Portugal) — January 28, 1990

M 4.6 earthquake: North Atlantic Ocean (Portugal) — January 28, 1990. Epicenter 1471 km SW of Horta, depth 10 km, 18:41 Local (1990-01-28 21:41 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (1471 km SW, Portugal) — 30.733, -41.663

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