A powerful earthquake that struck in the early hours of Wednesday, May 14, 2025, has once again brought seismic activity in the eastern Mediterranean into sharp focus. The quake, detected in the sea between the Greek islands of Kasos and Crete, has mobilized authorities in Greece and other countries in the region. Italy has also experienced several recent tremors, further increasing concerns in southern Europe.
Initial reports indicate that the earthquake, measuring 6 on the Richter scale according to the Geodynamic Institute of Athens, struck at 01:51 a.m. local time in Greece . The epicenter was located 19 kilometers south-southwest of the island of Kasos , at a focal depth of approximately 62,5 kilometers, which would have contributed to lessening its intensity at the surface.
Tsunami warning and safety recommendations in Greece
Following the earthquake, Greek authorities activated a tsunami warning as a precautionary measure. Residents of nearby islands such as Rhodes, Karpathos, and Kasos were asked to move away from the coast immediately and follow all instructions from emergency services.
The earthquake was felt particularly strongly in Crete, Rhodes, the Cyclades archipelago, and even in the capital, Athens . However, according to the president of the Greek Seismic Planning and Protection Organization, the deep location of the epicenter contributed to the tremor being felt less intensely. So far, no major damage or casualties have been reported on any of the islands near the epicenter.
Furthermore, experts have emphasized that, due to the depth, no major aftershocks or significant seismic sequences are expected . There is also no connection to other recent phenomena in the area, such as the earthquakes in Turkey or the activity in Santorini.
Regional impact of the earthquake and seismic context
The earthquake was not only felt in Greece. Reports from various agencies confirm that the tremor was noticeable in Turkey (especially on the southern coast of Datça and nearby port cities), Egypt, Libya, Lebanon, Palestine, Israel, and even southern Italy and Cyprus . No casualties or serious damage have been reported in any of these locations, although there were instances of fear and precautionary evacuations.
Greek authorities noted that the area where the earthquake occurred, known as the Greek Arc , is one of the most seismically active zones in Europe. There, the African and Eurasian tectonic plates collide, leading to the periodic occurrence of earthquakes, some of them highly destructive.
Earthquakes and alert in southern Italy: the Phlegraean Fields and Naples
Simultaneously, and just hours earlier, the Naples region of Italy also experienced a significant seismic swarm . At least 36 tremors were detected , the strongest measuring 4,4 on the Richter scale. These seismic movements are linked to the Phlegraean Fields volcanic caldera , considered by specialists to be one of the most dangerous in the world.
The tremors were strongly felt in Pozzuoli and several areas of Naples . The event caused evacuations at schools and universities, suspensions of public transportation, power outages , and an atmosphere of unease among the population. The phenomenon of bradyseism —a slow uplift of the ground due to the accumulation of magma and gases—is responsible for this activity, which is causing increasing concern among residents and local authorities.
Italy's National Institute of Geophysics and Volcanology has indicated that the frequency and intensity of tremors in this area have increased, and although so far there has been no serious material damage or injuries, a high level of vigilance is being maintained.
Historical context and recent activity in the Eastern Mediterranean
The earthquake of May 14, 2025, adds to a long list of earthquakes that have occurred in the Mediterranean region. Greece and its surrounding areas experience tremors relatively frequently due to their location on several active tectonic faults. The last deadly seismic event occurred in October 2022 in Samos, where two people died on the island and more than one hundred in Izmir, Turkey.
This latest tremor, although less severe than previous ones, once again highlights the importance of seismic monitoring and preparedness for potential emergencies in such a densely populated area with significant tourist appeal. Authorities emphasize that, despite the limited damage this time, prevention and calm are key in the face of these types of natural phenomena.
The combination of seismic activity in the Aegean Sea and the episodes in southern Italy reinforces the need for international coordination for seismic and volcanic monitoring, and the importance of residents always following the recommendations of the authorities.
This wave of seismic activity in Greece and Italy demonstrates that the Mediterranean remains a highly seismic region , where tectonic plate activity and volcanoes require constant monitoring and a proactive culture of prevention. The swift response of the authorities, along with the early warning systems, prevented more serious consequences this time, highlighting the importance of being prepared for these natural phenomena.