M4.0 Earthquake 38 km NE of Sibolga, Indonesia — September 11, 2023
2023-09-11 18:23:36 UTC (2023-09-11) · approx. 1:23 AM UTC+7 local
On September 11, 2023 at 18:23 UTC, a magnitude 4.0 intermediate depth earthquake struck 38 km NE of Sibolga, Indonesia, at a depth of 137.2 km and coordinates 2.0247°, 98.9876°.
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
98.9876°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.0 earthquake near Sibolga, Indonesia?
The magnitude 4.0 earthquake that struck 38 km NE of Sibolga, Indonesia on September 11, 2023 at 18:23 UTC had a depth of 137.2 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: us7000kvy7). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, September 11, 2023). M4.0 Earthquake 38 km NE of Sibolga, Indonesia — September 11, 2023. Retrieved November 18, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000kvy7/