The 1975 North Atlantic earthquake occurred on May 26 at 09:11 UTC.

The epicenter was located in the North Atlantic, in an area between the Azores, Iberian Peninsula, and Morocco.

[3] This was an intraplate earthquake that was located about 200 km south of the Gloria Fault, the presumed boundary between the African plate and the Eurasia Plate.

[4][5] Damage was reported in Madeira, which is about 250 km away.

[6][7] A tsunami of 0.3 m in maximum water elevation was recorded in Lagos, Portugal and an eyewitness reported a 2 m (6 ft 7 in) wave height at Ponta Delgada in the Azores.