M4.1 Earthquake 17 km NNE of Honchō, Japan — February 25, 2025
2025-02-25 22:22:12 UTC (2025-02-25) · approx. 8:22 AM UTC+10 local
On February 25, 2025 at 22:22 UTC, a magnitude 4.1 intermediate depth earthquake struck 17 km NNE of Honchō, Japan, at a depth of 71.1 km and coordinates 42.2651°, 143.0259°.
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
143.0259°E
Technical Information
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Common Questions
How strong was the magnitude 4.1 earthquake near Honchō, Japan?
The magnitude 4.1 earthquake that struck 17 km NNE of Honchō, Japan on February 25, 2025 at 22:22 UTC had a depth of 71.1 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: us6000px82). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, February 25, 2025). M4.1 Earthquake 17 km NNE of Honchō, Japan — February 25, 2025. Retrieved May 6, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000px82/