Thursday, July 24, 2025

Moderately strong M5.1 earthquake off Crete felt across western Greece


Moderately strong M5.1 earthquake off Crete felt across western Greece



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).

According to data from the Geodynamic Institute of the National Observatory of Athens, the epicenter was located approximately 21 km (13 miles) southeast of Antikythera, in the Kissamos Bay region of northwestern Crete.


This is about 160 km (99 miles) W of Irakleion and about 180 km (112 miles) SSE of Santorini, where thousands of earthquakes have been recorded since early 2025 as part of a long-running seismic swarm affecting the broader Santorini–Anafi–Amorgos region.


The European-Mediterranean Seismological Centre (EMSC) initially reported the earthquake as M5.8 at a depth of 45 km (28 miles), later revising it to M5.3 and further to M5.1.

The shaking was felt across much of Crete, particularly in the regional units of Chania and Heraklion. Residents described strong but brief ground movement.

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