A strong magnitude 6.4 earthquake occurred at 19:35:35 (UTC) on Wednesday, September 10, 2008, in the Central Mid-Atlantic Ridge region, 1260 km NNE of Parnaiba, Piaui, Brazil, at a depth of 10 km.

A strong magnitude 6.4 earthquake occurred at 19:35:35 (UTC) on Friday, May 23, 2008, in the Central Mid-Atlantic Ridge region, 1291 km NNE from Fortalezao, Brazil, at a depth of 10 km.

A strong magnitude 6.5 earthquake occurred at 12:14:50 (UTC) on Thursday, April 24, 2008, in the Central Mid-Atlantic Ridge region, 1035 km ENE of Fernando de Noronha, Pernambuco, Brazil, at a depth of 10 km.

A strong magnitude 6.9 earthquake occurred at 09:38:14 (UTC) on Friday, February 08, 2008, in the Northern Mid-Atlantic Ridge region, 1530 km NNE of Belem, Para, Brazil, at a depth of 10 km.

A strong magnitude 6.6 earthquake occurred at 22:42:28 (UTC) on Monday, August 20, 2007, in the Central Mid-Atlantic Ridge region, 1245 km NNE of Parnaiba, Piaui, Brazil, at a depth of 10 km.

A strong magnitude 6.2 earthquake occurred at 08:26:00 (UTC) on Tuesday, July 3, 2007, in the central Mid-Atlantic Ridge region, 560 km NNE of Fernando de Noronha, Pernambuco, Brazil, at a depth of 10 km.