M4.1 Earthquake 93 km WSW of Kýthira, Greece — March 13, 2025
2025-03-13 20:35:07 UTC (2025-03-13) · approx. 9:35 PM UTC+1 local
On March 13, 2025 at 20:35 UTC, a magnitude 4.1 shallow crustal earthquake struck 93 km WSW of Kýthira, Greece, at a depth of 48.9 km and coordinates 35.6894°, 22.1274°.
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
22.1274°E
Technical Information
Common Questions
How strong was the magnitude 4.1 earthquake near Kýthira, Greece?
The magnitude 4.1 earthquake that struck 93 km WSW of Kýthira, Greece on March 13, 2025 at 20:35 UTC had a depth of 48.9 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: us7000pln7). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, March 13, 2025). M4.1 Earthquake 93 km WSW of Kýthira, Greece — March 13, 2025. Retrieved May 17, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000pln7/