M4.1 Earthquake in the Bonin Islands, Japan region — May 12, 2025
2025-05-12 17:23:13 UTC (2025-05-12) · approx. 2:23 AM UTC+9 local
On May 12, 2025 at 17:23 UTC, a magnitude 4.1 shallow crustal earthquake struck in the Bonin Islands, Japan region, at a depth of 42.7 km and coordinates 26.6107°, 142.0317°.
Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
142.0317°E
Technical Information
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Common Questions
How strong was the magnitude 4.1 earthquake in the Bonin Islands, Japan region?
The magnitude 4.1 earthquake that struck in the Bonin Islands, Japan region on May 12, 2025 at 17:23 UTC had a depth of 42.7 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 4.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.1 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000qg80). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, May 12, 2025). M4.1 Earthquake in the Bonin Islands, Japan region — May 12, 2025. Retrieved July 24, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000qg80/