M4.1 Earthquake 56 km WSW of Kastrí, Greece — September 13, 2026
2026-09-13 22:05:08 UTC (2026-09-13) · approx. 12:05 AM UTC+2 local
On September 13, 2026 at 22:05 UTC, a magnitude 4.1 shallow crustal earthquake struck 56 km WSW of Kastrí, Greece, at a depth of 50.9 km and coordinates 34.7184°, 23.4875°.
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
23.4875°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.1 earthquake near Kastrí, Greece?
The magnitude 4.1 earthquake that struck 56 km WSW of Kastrí, Greece on September 13, 2026 at 22:05 UTC had a depth of 50.9 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: us7000tiaf). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, September 13, 2026). M4.1 Earthquake 56 km WSW of Kastrí, Greece — September 13, 2026. Retrieved October 7, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000tiaf/