A moderately strong earthquake registered by the EMSC as M5.1 (downgraded from M5.8) hit offshore Crete near Antikythera, Greece at 16:26 local time (13:26 UTC) on July 23, 2025. The agency is reporting a depth of 50 km (31 miles).
A strong earthquake registered by the USGS as M6.2 hit near the north coast of Crete, Greece, at 03:19 UTC (06:19 local time) on May 22, 2025. The agency is reporting a depth of 64 km (40 miles). EMSC measured it as M6.1 at a depth of 75 km (47 miles).
A strong earthquake registered by the EMSC as M6.1 hit Crete, Greece, at 22:51 UTC on May 13, 2025 (00:51 local time, May 14) at a depth of 71 km (44 miles). USGS is reporting M6.0 at a depth of 74 km (46 miles).
Researchers at the 10th Delphi Economic Forum on April 13, 2025, revealed that the use of advanced machine learning technology enabled them to detect over 50 000 earthquakes in Santorini, some of which occurred before the intense earthquake swarm in February 2025. This early detection enhanced earthquake forecasting and improved warning procedures during the crisis.
Schools in Santorini, Ios, Anafi, and Amorgos will remain closed at least until February 21, 2025, as the Greek government prepares for another meeting to assess seismic risks in the Aegean Sea near Santorini. Over 1 300 earthquakes were recorded with a magnitude above 3.0 in the sea area near Anydros since the beginning of the month, with the strongest reaching M5.3. The government also announced plans to build an emergency escape port in Santorini in addition to the new port under development.
Ios became the fourth island in the Aegean to be placed under a state of emergency on February 15, following the trend set by Santorini on February 6, Amorgos on February 12, and Anafi on February 13, due to the ongoing seismic activity in the region since late January 2025. On January 18, two M5.1 quakes were registered between Santorini and Amorgos, shaking the area with enough intensity to be felt across multiple islands.
The Greek island of Anafi was placed under a state of emergency on February 13, 2025, due to ongoing intense seismic activity. This makes it the third island in the Aegean Sea to receive this designation following Amorgos and Santorini (Thera).
Authorities have placed the Greek island of Amorgos under a state of emergency on February 13, 2025, following a surge in seismic activity in the southeastern Aegean Sea.
Over 12 800 earthquakes were recorded in the Santorini-Amorgos zone between February 1 and 10, 2025, with the strongest, an M5.3 event, registered at 22:16 LT (20:16 UTC) on February 10. In response, the Hellenic Red Cross (HRC) has deployed rescue teams, social workers, and psychologists to assist residents in the affected region.
A state of emergency was declared for the Greek island of Santorini on February 6, 2025, due to significant seismic activity affecting the region over the past 10 days. The measure was announced by General Vasilis Papageorgiou, Civil Protection Secretary, and will remain in effect until March 3. The most powerful earthquake recorded so far, measuring 5.2 in magnitude, occurred on February 5. The continuous seismic activity has led to the evacuation of over 10 000 residents and workers from the island.
