M4.1 Earthquake 8 km NNE of Kastrí, Greece — May 4, 2025
2025-05-04 19:57:35 UTC (2025-05-04) · approx. 9:57 PM UTC+2 local
On May 4, 2025 at 19:57 UTC, a magnitude 4.1 shallow crustal earthquake struck 8 km NNE of Kastrí, Greece, at a depth of 40.3 km and coordinates 34.9026°, 24.1363°.
Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
24.1363°E
Technical Information
Common Questions
How strong was the magnitude 4.1 earthquake near Kastrí, Greece?
The magnitude 4.1 earthquake that struck 8 km NNE of Kastrí, Greece on May 4, 2025 at 19:57 UTC had a depth of 40.3 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.1 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000px4q). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, May 4, 2025). M4.1 Earthquake 8 km NNE of Kastrí, Greece — May 4, 2025. Retrieved July 12, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000px4q/