M4.7 Earthquake 239 km ENE of Lospalos, Timor Leste — March 4, 2026
2026-03-04 09:31:22 UTC (2026-03-04) · approx. 6:31 PM UTC+9 local
Aftershock of the M5.1 mainshock.
On March 4, 2026 at 09:31 UTC, a magnitude 4.7 intermediate depth earthquake struck 239 km ENE of Lospalos, Timor Leste, at a depth of 135.5 km and coordinates -7.4023°, 128.8582°. This earthquake was detected by 72 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 340, placing it among routine seismic activity.
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.
This earthquake is part of an ongoing aftershock sequence following the magnitude 5.1 mainshock that occurred 29 days ago 202 km NE of Lospalos, Timor Leste. Since the mainshock, the USGS has recorded 0 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.
Earthquake Details
128.8582°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.7 earthquake near Lospalos, Timor Leste?
The magnitude 4.7 earthquake that struck 239 km ENE of Lospalos, Timor Leste on March 4, 2026 at 09:31 UTC had a depth of 135.5 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -7.4023°, 128.8582°, which is 239 km ENE of Lospalos, Timor Leste.
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.
Is this the same earthquake as the M5.1 one earlier?
No. This magnitude 4.7 earthquake is an aftershock of the larger magnitude 5.1 mainshock that occurred earlier 202 km NE of Lospalos, Timor Leste. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
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: us7000s1yb). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, March 4, 2026). M4.7 Earthquake 239 km ENE of Lospalos, Timor Leste — March 4, 2026. Retrieved May 15, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000s1yb/