M4.7 Earthquake 225 km S of Sumbawa Besar, Indonesia — September 25, 2020
2020-09-25 20:24:20 UTC (2020-09-25) · approx. 4:24 AM UTC+8 local
On September 25, 2020 at 20:24 UTC, a magnitude 4.7 shallow crustal earthquake struck 225 km S of Sumbawa Besar, Indonesia, at a depth of 14.7 km and coordinates -10.5281°, 117.5470°.
Physical scale: An earthquake of magnitude 4.7 releases seismic energy equivalent to roughly 169 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.1 km — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Indonesia, a region characterized by the convergence of the Indo-Australian, Eurasian, and Philippine Sea plates, forming the Sunda-Banda arc system. The nearest mapped fault system is the Sunda megathrust. View all earthquakes in Indonesia.
Learn more: Magnitude scale · Aftershock sequences
Earthquake Details
117.5470°E
Technical Information
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Common Questions
How strong was the magnitude 4.7 earthquake near Sumbawa Besar, Indonesia?
The magnitude 4.7 earthquake that struck 225 km S of Sumbawa Besar, Indonesia on September 25, 2020 at 20:24 UTC had a depth of 14.7 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -10.5281°, 117.5470°, which is 225 km S of Sumbawa Besar, Indonesia. View all earthquakes in Indonesia.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.7 earthquakes can continue for several days and gradually diminish over time.
Has Indonesia had earthquakes this big before?
The largest recorded earthquake in Indonesia was the M9.1 Indian Ocean earthquake of December 26, 2004. Today's magnitude 4.7 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us6000c1ds). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, September 25, 2020). M4.7 Earthquake 225 km S of Sumbawa Besar, Indonesia — September 25, 2020. Retrieved December 5, 2020 from https://www.earthquaketracker.org/earthquakes/event/us6000c1ds/