What are the chances of a major earthquake happening in Spain?

For Huelva University Geology professor Francisco Manuel Alonso, fault lines along these Eurasian and African plates mean that an earthquake as severe as Turkey’s cannot be completely ruled out in Spain. The following map by Spain’s Geographical Institute (IGN) shows that the parts of Spain with the most frequent seismic activity are in the south and east of the Iberian Peninsula, where the Eurasian and African plates converge. But it’s the Great Lisbon Earthquake of 1755, with a death toll of between 12,000 and 50,000 people and which was felt across the Iberian Peninsula, that not only went down in history but also highlights how the risk of a macroseism (major earthquake) in Spain is - although unlikely - not impossible.