Since late January 2025, the Greek island of Santorini has been experiencing an unprecedented series of earthquakes, known as an “earthquake swarm.” Over 12,000 tremors have been recorded, with magnitudes ranging from minor to a notable 5.3 magnitude quake on February 10.
The epicenters of these quakes are primarily located between Santorini and the nearby island of Amorgos, particularly around the uninhabited islet of Anydros. This region lies within the Hellenic volcanic arc, where the African tectonic plate is subducting beneath the Eurasian plate. Despite Santorini’s volcanic history, experts have clarified that the current seismic activity is tectonic in nature and not related to volcanic movements.
In response to the ongoing seismic events, Greek authorities have declared a state of emergency on Santorini. Precautionary measures include the closure of schools, deployment of emergency response teams, and the evacuation of over 11,000 residents and tourists. Infrastructure assessments are ongoing, with particular attention to older structures and areas prone to landslides.
The continuous tremors have led to significant disruptions in daily life and tourism, with many businesses temporarily closing. The Greek government has introduced support measures for affected workers, including temporary suspension of employment contracts and financial compensation.
Seismologists are closely monitoring the situation, acknowledging the possibility of a more significant earthquake due to the ongoing activity. The public is advised to stay informed through official channels and adhere to safety guidelines issued by authorities.
For a visual representation of the affected area, please refer to the accompanying video map detailing the regions experiencing seismic activity.
