M4.3 Earthquake 110 km NW of Tobelo, Indonesia — September 1, 2025
2025-09-01 21:27:46 UTC (2025-09-01) · approx. 5:27 AM UTC+8 local
On September 1, 2025 at 21:27 UTC, a magnitude 4.3 intermediate depth earthquake struck 110 km NW of Tobelo, Indonesia, at a depth of 104.9 km and coordinates 2.3547°, 127.2403°.
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
127.2403°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.3 earthquake near Tobelo, Indonesia?
The magnitude 4.3 earthquake that struck 110 km NW of Tobelo, Indonesia on September 1, 2025 at 21:27 UTC had a depth of 104.9 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.
Actions
Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000qt5a). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, September 1, 2025). M4.3 Earthquake 110 km NW of Tobelo, Indonesia — September 1, 2025. Retrieved November 19, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000qt5a/