Greek Authorities Closely Monitor Seismic Activity Between Santorini and Amorgos

Seismic activity has been ongoing in the sea area between Santorini and Amorgos, with two mild earthquakes recorded in the early hours of Monday, according to data from the Geodynamic Institute of the National Observatory of Athens.

Authorities have implemented precautionary measures, including the temporary closure of schools, and urge residents and visitors to remain calm, informing that the situation is under continuous scientific monitoring and that all actions taken are preventive.

A 4.4-magnitude earthquake, classified as “weak”, was recorded at 01:54am, located 23 kilometers south-southwest of Arkesini, Amorgos, approximately 234 kilometers southeast of Athens and near Santorini. A second tremor, measuring 4.3 on the Richter scale, occurred at 04:35am, 16 kilometers north-northwest of Anafi, at a focal depth of 5 kilometers.

Increased seismic activity under observation

Since January 24, a notable increase in seismic activity has been observed in the Anydros sea area, between Thira (Santorini) and Amorgos. Over 380 earthquakes have been recorded in the region, according to Geodynamic Institute Director Vasilis Karastathis.

“The phenomenon is being closely monitored by scientists,” Karastathis stated to the Athens-Macedonian News Agency (APE-MPE) on Sunday.

Preventive measures & Public guidance

As a precautionary measure, local authorities have announced the temporary closure of schools on Santorini, Amorgos, Ios, Anafi, and Antiparos today. Emergency response teams, including the 1st EMAK rescue unit, the 1st Special Forest Operations Unit, medical teams, and ambulances equipped with specialized equipment, have been deployed to Santorini.

Citizens are advised to:

– Avoid gathering in enclosed spaces.
– Stay away from abandoned buildings.
– Limit access to certain ports, including Ammoudi, Armeni, Korfou, and the Old Port of Fira.

Authorities highlight that these measures are purely precautionary, and there is no immediate cause for concern.

Continuous monitoring by authorities

More than 200 minor earthquakes have been recorded in the area over the past 48 hours, with 85 occurring on Saturday and 78 by midday Sunday, seven of which were above 4.0 on the Richter scale.

In response, the Greek government remains on high alert. On Sunday, Prime Minister Kyriakos Mitsotakis chaired an emergency meeting at Maximos Mansion in Athens, where he was briefed by scientific experts on the latest seismic developments.

Minister of Climate Crisis and Civil Protection Vasilis Kikilias reassured the public that the situation is being closely monitored, and all current measures are preventive.

“The Seismic Risk Assessment Committee remains in continuous session, and updates will be provided as necessary,” Kikilias said.

Local response and Travel demand

While seismic activity has drawn attention, local officials stress that calm prevails. South Aegean Regional Governor George Hatzimarkos, who participated in Sunday’s emergency meeting, urged residents and visitors to follow official guidance.

“At this time of year, the number of tourists in Santorini is relatively low, as most accommodations are closed,” Hatzimarkos noted, adding that he will visit the island in the coming days to consult with experts.

Meanwhile, reports suggest increased demand for ferry and flight tickets to Athens following scientific assessments that a stronger earthquake cannot be ruled out. However, tourism industry representatives highlight that there are no major issues with ticket availability, as visitor numbers remain low.

British travel advisory on Santorini & Amorgos

The UK Foreign, Commonwealth & Development Office (FCDO) has issued an advisory for British travelers visiting Santorini and Amorgos, recommending vigilance due to increased seismic activity. Visitors are encouraged to stay informed through official sources and follow local authorities’ guidance.