M4.2 Earthquake 60 km NNW of Yonakuni, Japan — October 29, 2025
2025-10-29 14:55:04 UTC (2025-10-29) · approx. 10:55 PM UTC+8 local
On October 29, 2025 at 14:55 UTC, a magnitude 4.2 shallow crustal earthquake struck 60 km NNW of Yonakuni, Japan, at a depth of 10.0 km and coordinates 24.9980°, 122.8429°.
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
122.8429°E
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Common Questions
How strong was the magnitude 4.2 earthquake near Yonakuni, Japan?
The magnitude 4.2 earthquake that struck 60 km NNW of Yonakuni, Japan on October 29, 2025 at 14:55 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 4.2 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: us6000rp5r). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, October 29, 2025). M4.2 Earthquake 60 km NNW of Yonakuni, Japan — October 29, 2025. Retrieved January 27, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000rp5r/