M4.2 Earthquake 191 km SW of Kotabumi, Indonesia — January 9, 2025
2025-01-09 18:44:19 UTC (2025-01-09) · approx. 1:44 AM UTC+7 local
On January 9, 2025 at 18:44 UTC, a magnitude 4.2 shallow crustal earthquake struck 191 km SW of Kotabumi, Indonesia, at a depth of 35.0 km and coordinates -5.8868°, 103.5146°.
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
103.5146°E
Technical Information
Common Questions
How strong was the magnitude 4.2 earthquake near Kotabumi, Indonesia?
The magnitude 4.2 earthquake that struck 191 km SW of Kotabumi, Indonesia on January 9, 2025 at 18:44 UTC had a depth of 35.0 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 4.2 earthquakes can continue for several days and gradually diminish over time.
Actions
Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000plgt). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, January 9, 2025). M4.2 Earthquake 191 km SW of Kotabumi, Indonesia — January 9, 2025. Retrieved March 20, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000plgt/