M4.2 Earthquake 145 km NW of Tobelo, Indonesia — August 17, 2025
2025-08-17 23:12:32 UTC (2025-08-17) · approx. 7:12 AM UTC+8 local
On August 17, 2025 at 23:12 UTC, a magnitude 4.2 shallow crustal earthquake struck 145 km NW of Tobelo, Indonesia, at a depth of 57.8 km and coordinates 2.4729°, 126.9288°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
126.9288°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.2 earthquake near Tobelo, Indonesia?
The magnitude 4.2 earthquake that struck 145 km NW of Tobelo, Indonesia on August 17, 2025 at 23:12 UTC had a depth of 57.8 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 4.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000qvgf). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, August 17, 2025). M4.2 Earthquake 145 km NW of Tobelo, Indonesia — August 17, 2025. Retrieved November 4, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000qvgf/