A 5.5 magnitude earthquake occurred in the Aegean Sea, offshore Greece . The figure shows the Forecast-points (green triangle) in which the alert levels are estimated. The isochrones (concentric curves starting from the epicenter) represent the tsunami propagation times estimated in the rapid simulation.Today, 08.09.25, at 21:27 UTC, a 5.5 magnitude earthquake was located in the Aegean Sea, near the coastal city of Nea Styra, in Greece (lat, lon) 38.16N; 24.10E at a depth of approximately 20 km.
The earthquake's magnitude and hypocentral location, based on the decision matrix used, activated the INGV-Tsunami Alert Center service, which at 21:35 UTC, sent an INFORMATION message to the Civil Protection Department and the Mediterranean countries subscribing CAT services.