M5.1 Earthquake 44 km NNW of Kolympári, Greece — July 23, 2025
2025-07-23 13:26:54 UTC (2025-07-23) · approx. 3:26 PM UTC+2 local
Felt by 41 people across nearby locations.
On July 23, 2025 at 13:26 UTC, a magnitude 5.1 shallow crustal earthquake struck 44 km NNW of Kolympári, Greece, at a depth of 66.0 km and coordinates 35.8797°, 23.5212°. This earthquake was detected by 84 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 422, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 5.1 releases seismic energy equivalent to roughly 674 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 2.0 km — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Greece, a region characterized by the Hellenic subduction zone, where the African Plate subducts northward beneath the Aegean at roughly 35 mm per year. The nearest mapped fault system is the Hellenic Trench. View all earthquakes in Greece.
Learn more: Magnitude scale · Aftershock sequences
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 41 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
23.5212°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 5.1 earthquake near Kolympári, Greece?
The magnitude 5.1 earthquake that struck 44 km NNW of Kolympári, Greece on July 23, 2025 at 13:26 UTC had a depth of 66.0 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at 35.8797°, 23.5212°, which is 44 km NNW of Kolympári, Greece. View all earthquakes in Greece.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.1 earthquakes can continue for days to weeks and gradually diminish over time.
Has Greece had earthquakes this big before?
The largest recorded earthquake in Greece was the M8.5 Crete earthquake of June 29, 1303. Today's magnitude 5.1 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us6000qucv). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, July 23, 2025). M5.1 Earthquake 44 km NNW of Kolympári, Greece — July 23, 2025. Retrieved October 11, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000qucv/