M4.3 Earthquake 241 km S of Sanana, Indonesia — August 18, 2026
2026-08-18 06:45:39 UTC (1 hour ago) · approx. 2:45 PM UTC+8 local
On August 18, 2026 at 06:45 UTC, a magnitude 4.3 deep-focus earthquake struck 241 km S of Sanana, Indonesia, at a depth of 381.0 km and coordinates -4.2430°, 125.9428°.
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.
Earthquake Details
125.9428°E
Technical Information
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Common Questions
How strong was the magnitude 4.3 earthquake near Sanana, Indonesia?
The magnitude 4.3 earthquake that struck 241 km S of Sanana, Indonesia on August 18, 2026 at 06:45 UTC had a depth of 381.0 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 4.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000tll0). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, August 18, 2026). M4.3 Earthquake 241 km S of Sanana, Indonesia — August 18, 2026. Retrieved August 18, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000tll0/