M 4.9 earthquake: North Atlantic Ocean (Portugal) — March 10, 1991

M 4.9 earthquake: North Atlantic Ocean (Portugal) — March 10, 1991. Epicenter 329 km N of Horta, depth 10 km, 01:01 Local (1991-03-10 03:01 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (329 km N, Portugal) — 41.43, -29.418

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