IPMA said the earthquake, with an epicentre located about 70 kilometers south of Faro, was recorded at 14:31, and felt, with maximum intensity in the regions of Faro and Albufeira.

"This earthquake, according to the information available so far, did not cause any injuries or structural damage", the institute said.

Earthquakes are classified according to their magnitude as micro (less than 2.0), very small (2.0-2.9), small (3.0-3.9), light (4.0-4.9), moderate (5.0-5.9), strong (6.0-6.9), large (7.0-7.9), important (8.0-8.9), exceptional (9.0-9.9) and extreme (over 10).