M 4.6 earthquake: North Atlantic Ocean (Portugal) — September 8, 1999

M 4.6 earthquake: North Atlantic Ocean (Portugal) — September 8, 1999. Epicenter 1272 km N of Angra do Heroísmo, depth 10 km, 14:56 Local (1999-09-08 16:56 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (1272 km N, Portugal) — 50.025, -28.934

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