4.0

M4.0 Earthquake 170 km NE of Lospalos, Timor LesteJuly 17, 2026

2026-07-17 13:38:12 UTC (2 hours ago) · approx. 10:38 PM UTC+9 local

MagnitudeM4.0(mb)
Time13:38 UTC10:38 PM UTC+9
Depth169.7 kmintermediate depth
Coordinates-7.492°, 128.152°
Felt byNo felt reports
Status✓ Reviewed by USGS

On July 17, 2026 at 13:38 UTC, a magnitude 4.0 intermediate depth earthquake struck 170 km NE of Lospalos, Timor Leste, at a depth of 169.7 km and coordinates -7.4921°, 128.1524°.

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.

Map showing earthquake epicenter at -7.49°, 128.15°

Earthquake Details

Magnitude
4.0 mb
Depth
169.7 km
intermediate depth
Location
-7.4921°N
128.1524°E

Technical Information

Event ID
us7000t1b6
Event Type
earthquake
Status
✓ Reviewed
Significance
246
Stations Used
22
Azimuthal Gap
72.0°
Min Station Distance
3.426°
RMS Residual
0.92 sec
Last Updated
2026-07-17 14:22:50 UTC

Common Questions

How strong was the magnitude 4.0 earthquake near Lospalos, Timor Leste?

The magnitude 4.0 earthquake that struck 170 km NE of Lospalos, Timor Leste on July 17, 2026 at 13:38 UTC had a depth of 169.7 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.

Understanding This Data

Magnitude 4.0 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000t1b6). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, July 17, 2026). M4.0 Earthquake 170 km NE of Lospalos, Timor LesteJuly 17, 2026. Retrieved July 17, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000t1b6/