M 4.5 earthquake: North Atlantic Ocean (Portugal) — August 11, 1999

M 4.5 earthquake: North Atlantic Ocean (Portugal) — August 11, 1999. Epicenter 1984 km SW of Horta, depth 10 km, 12:59 Local (1999-08-11 15:59 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (1984 km SW, Portugal) — 26.668, -44.536

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