Quake sways buildings in Havana
There are no immediate reports of damage or injuries.
The tremor, which took place just before 4pm, was centred about 112 miles east of Havana and 41 miles north-east of the tourist resort of Varadero.
In Havana, the quake was felt clearly by workers in two six-floor buildings that were temporarily evacuated. It appeared to last around 30 seconds.
The US Geological Survey calculated the quake had a preliminary magnitude of 5.0.