Magnitude 4.8 earthquake strikes near Pátrai, Achaea, West Greece, Greece

UPDATE: the quake was later downgraded to magnitude 4.6.

Original report:

Just 21 minutes ago, a 6.4-magnitude earthquake struck near Pátrai, Achaea, West Greece, Greece. The tremor was recorded late at night on Saturday, December 6th, 2025, at 10:48 pm local time, at a shallow depth of 10. km below the surface.

The event was filed by the German Research Centre for Geosciences (GFZ), the first seismological agency to report it.

Our monitoring service identified a second report from the citizen-seismograph network of RaspberryShake which listed the quake 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 Pátrai (pop. 168,000) located 24 km from the epicenter, Aigio (pop. 20,400) 24 km away, Amaliada (pop. 16,800) 58 km away, Pyrgos (pop. 22,400) 61 km away, and Agrinio (pop. 46,900) 74 km away.

In Athens (pop. 664,000) located 160 km from the epicenter, the quake should have been felt as light shaking.

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: 6.4

Depth: 10.00 km

Epicenter latitude / longitude: 38.08°N / 21.91°E (Dimos Erymanthos, West Greece, Greece)

Primary data source: GFZ
https://www.volcanodiscovery.com/earthquake/news/288845/Magnitude-64-earthquake-strikes-near-Patrai-Achaea-West-Greece-Greece.html