M4.0 Earthquake 15 km SSE of Kocaaliler, Turkey — September 21, 2020
2020-09-21 16:56:48 UTC (2020-09-21) · approx. 6:56 PM UTC+2 local
On September 21, 2020 at 16:56 UTC, a magnitude 4.0 intermediate depth earthquake struck 15 km SSE of Kocaaliler, Turkey, at a depth of 105.1 km and coordinates 37.1860°, 30.7982°.
Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
30.7982°E
Technical Information
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Common Questions
How strong was the magnitude 4.0 earthquake near Kocaaliler, Turkey?
The magnitude 4.0 earthquake that struck 15 km SSE of Kocaaliler, Turkey on September 21, 2020 at 16:56 UTC had a depth of 105.1 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 4.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000bze9). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, September 21, 2020). M4.0 Earthquake 15 km SSE of Kocaaliler, Turkey — September 21, 2020. Retrieved November 28, 2020 from https://www.earthquaketracker.org/earthquakes/event/us6000bze9/