4.3

M4.3 Earthquake 272 km ENE of Lospalos, Timor LesteMarch 17, 2025

2025-03-17 19:56:39 UTC (2025-03-17) · approx. 4:56 AM UTC+9 local

MagnitudeM4.3(mb)
Time19:56 UTC4:56 AM UTC+9
Depth118.5 kmintermediate depth
Coordinates-7.569°, 129.277°
Felt byNo felt reports
Status✓ Reviewed by USGS

On March 17, 2025 at 19:56 UTC, a magnitude 4.3 intermediate depth earthquake struck 272 km ENE of Lospalos, Timor Leste, at a depth of 118.5 km and coordinates -7.5688°, 129.2771°.

Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at -7.57°, 129.28°

Earthquake Details

Magnitude
4.3 mb
Depth
118.5 km
intermediate depth
Location
-7.5688°N
129.2771°E

Technical Information

Event ID
us7000pmtb
Event Type
earthquake
Status
✓ Reviewed
Significance
284
Stations Used
28
Azimuthal Gap
101.0°
Min Station Distance
5.408°
RMS Residual
0.73 sec
Last Updated
2025-05-17 19:20:03 UTC

Common Questions

How strong was the magnitude 4.3 earthquake near Lospalos, Timor Leste?

The magnitude 4.3 earthquake that struck 272 km ENE of Lospalos, Timor Leste on March 17, 2025 at 19:56 UTC had a depth of 118.5 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 4.3 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.3 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000pmtb). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, March 17, 2025). M4.3 Earthquake 272 km ENE of Lospalos, Timor LesteMarch 17, 2025. Retrieved May 17, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000pmtb/