M4.8 Earthquake 281 km NE of Lospalos, Timor Leste — September 23, 2025
2025-09-23 17:08:10 UTC (2025-09-23) · approx. 2:08 AM UTC+9 local
On September 23, 2025 at 17:08 UTC, a magnitude 4.8 deep-focus earthquake struck 281 km NE of Lospalos, Timor Leste, at a depth of 352.6 km and coordinates -6.4048°, 128.4207°. This earthquake was detected by 103 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 354, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.8 releases seismic energy equivalent to roughly 239 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.2 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
128.4207°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.8 earthquake near Lospalos, Timor Leste?
The magnitude 4.8 earthquake that struck 281 km NE of Lospalos, Timor Leste on September 23, 2025 at 17:08 UTC had a depth of 352.6 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -6.4048°, 128.4207°, which is 281 km NE of Lospalos, Timor Leste.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.8 earthquakes can continue for several days and gradually diminish over time.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.
Authoritative source: USGS event page (event ID: us6000rcd3). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, September 23, 2025). M4.8 Earthquake 281 km NE of Lospalos, Timor Leste — September 23, 2025. Retrieved May 28, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000rcd3/