Magnitude 4.7 earthquake strikes near Pátrai, Achaea, West Greece, Greece

A magnitude 4.7 earthquake near Pátrai, Achaea, West Greece, Greece, was reported only 12 minutes ago by the National Observatory of Athens (NOA), considered the main national agency that monitors seismic activity in Greece. The earthquake occurred at a very shallow depth of 5. km beneath the epicenter late at night on Saturday, December 6th, 2025, at 10:48 pm local time. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
A second report was later issued by the Kandilli Oservatory and Earthquake Research Institute in Istanbul (KOERI-RETMC), which listed it as a magnitude 4.7 earthquake as well. Other agencies reporting the same quake include the European-Mediterranean Seismological Centre (EMSC) at magnitude 4.9, the German Research Centre for Geosciences (GFZ) at magnitude 4.8, The Aristotle University of Thessaloniki Geophysical Lab. (AUTH) at magnitude 4.6, The Seismological Laboratory of the University of Athens (UOA) at magnitude 4.7, and the citizen-seismograph network of RaspberryShake at magnitude 4.8.
Based on the preliminary seismic data, the quake should have been widely felt by almost everyone in the area of the epicenter. It might have caused light to moderate damage.
Moderate shaking probably occurred in Kalavryta (pop. 1,600) located 6 km from the epicenter.
In Diakopto (pop. 5,600) located 24 km from the epicenter, the quake should have been felt as light shaking.
Weak shaking might have been felt in Aigio (pop. 20,400) located 26 km from the epicenter, Pátrai (pop. 168,000) 37 km away, Pyrgos (pop. 22,400) 65 km away, Amaliada (pop. 16,800) 65 km away, Argos (pop. 22,200) 74 km away, and Corinth (pop. 30,200) 80 km away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Agrinio (pop. 46,900) located 87 km from the epicenter.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you’re in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.


Earthquake data:
Date & time: Dec 6, 2025 10:48 pm (Athens time) local time (6 Dec 2025 20:48 GMT)
Magnitude: 4.7
Depth: 5.00 km
Epicenter latitude / longitude: 38.02°N / 22.04°E (Dimos Kalavryta, West Greece, Greece)
Primary data source: NOA
https://www.volcanodiscovery.com/earthquake/news/288843/Magnitude-47-earthquake-strikes-near-Patrai-Achaea-West-Greece-Greece.html