M4.1 Earthquake 83 km S of Koróni, Greece — March 13, 2021
2021-03-13 20:09:23 UTC (2021-03-13) · approx. 9:09 PM UTC+1 local
On March 13, 2021 at 20:09 UTC, a magnitude 4.1 shallow crustal earthquake struck 83 km S of Koróni, Greece, at a depth of 10.0 km and coordinates 36.0392°, 21.9177°.
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
21.9177°E
Technical Information
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Common Questions
How strong was the magnitude 4.1 earthquake near Koróni, Greece?
The magnitude 4.1 earthquake that struck 83 km S of Koróni, Greece on March 13, 2021 at 20:09 UTC had a depth of 10.0 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: us6000dvqu). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, March 13, 2021). M4.1 Earthquake 83 km S of Koróni, Greece — March 13, 2021. Retrieved May 26, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000dvqu/