Two main earthquakes, magnitudes 5.9 M and 6.8 M respectively, at a depth of 14 km occurred on 10 November at 15:50 UTC (10:50 local time) and at 16:49 UTC (11:49 local time) over the sea with a distance of 8 km from the south-eastern coast of Cuba. The epicentre was located approximately 30 km south-east of Pilon municipality and 40 km south of Bartolomé Masó, Granma province.
At least three aftershocks between 4 M and 4.6 M hit the same area. For the 6.8 M earthquake, USGS PAGER estimates that up to 32,000 people were exposed to very strong shaking and more than 599,000 to strong shaking.
According to media reports, as of 11 November, the earthquake was felt in the provinces of Santiago de Cuba, Guantánamo, Granma, Holguín and Ciego de Ávila, in south-eastern Cuba. Several buildings have been damaged in Granma Province, particularly in Pilon municipality, and landslides have been recorded in the affected areas.