M4.2 Earthquake 170 km N of Gili Trawangan, Indonesia — August 9, 2023
2023-08-09 16:15:31 UTC (2023-08-09) · approx. 12:15 AM UTC+8 local
On August 9, 2023 at 16:15 UTC, a magnitude 4.2 deep-focus earthquake struck 170 km N of Gili Trawangan, Indonesia, at a depth of 540.7 km and coordinates -6.8075°, 116.1172°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
116.1172°E
Technical Information
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Common Questions
How strong was the magnitude 4.2 earthquake near Gili Trawangan, Indonesia?
The magnitude 4.2 earthquake that struck 170 km N of Gili Trawangan, Indonesia on August 9, 2023 at 16:15 UTC had a depth of 540.7 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 4.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000knz5). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, August 9, 2023). M4.2 Earthquake 170 km N of Gili Trawangan, Indonesia — August 9, 2023. Retrieved October 17, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000knz5/