M 4.9 earthquake: North Atlantic Ocean (Portugal) — June 12, 1991

M 4.9 earthquake: North Atlantic Ocean (Portugal) — June 12, 1991. Epicenter 645 km N of Angra do Heroísmo, depth 10 km, 05:59 Local (1991-06-12 07:59 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (645 km N, Portugal) — 44.401, -28.229

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