How unusual is Santorini’s seismic activity after swarm of earthquakes?
Earthquakes are not uncommon on Santorini and in 1956 was actually struck by one of the most serious quakes to affect Greece over the past 100 years. A 7.7-magnitude temblor, dubbed the Amorgos earthquake, triggered a roughly 20-meter (65-foot) tsunami, causing significant damage in Amorgos and Santorini and killing more than 50 people.