M 4.5 earthquake: North Atlantic Ocean (Portugal) — January 31, 1998

M 4.5 earthquake: North Atlantic Ocean (Portugal) — January 31, 1998. Epicenter 508 km SW of Horta, depth 10 km, 00:30 Local (1998-01-31 02:30 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (508 km SW, Portugal) — 36.306, -33.673

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