M4.0 Earthquake 283 km SSW of Tambolaka, Indonesia — May 4, 2026
2026-05-04 23:49:41 UTC (2026-05-04) · approx. 7:49 AM UTC+8 local
On May 4, 2026 at 23:49 UTC, a magnitude 4.0 shallow crustal earthquake struck 283 km SSW of Tambolaka, Indonesia, at a depth of 10.0 km and coordinates -11.6307°, 117.9094°.
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.
Earthquake Details
117.9094°E
Technical Information
Common Questions
How strong was the magnitude 4.0 earthquake near Tambolaka, Indonesia?
The magnitude 4.0 earthquake that struck 283 km SSW of Tambolaka, Indonesia on May 4, 2026 at 23:49 UTC had a depth of 10.0 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 4.0 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.
Actions
Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000sxgj). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, May 4, 2026). M4.0 Earthquake 283 km SSW of Tambolaka, Indonesia — May 4, 2026. Retrieved May 19, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000sxgj/