M4.2 Earthquake 80 km E of Namie, Japan — March 26, 2025
2025-03-26 19:34:43 UTC (2025-03-26) · approx. 4:34 AM UTC+9 local
On March 26, 2025 at 19:34 UTC, a magnitude 4.2 shallow crustal earthquake struck 80 km E of Namie, Japan, at a depth of 46.9 km and coordinates 37.5551°, 141.9084°.
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
141.9084°E
Technical Information
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Common Questions
How strong was the magnitude 4.2 earthquake near Namie, Japan?
The magnitude 4.2 earthquake that struck 80 km E of Namie, Japan on March 26, 2025 at 19:34 UTC had a depth of 46.9 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 4.2 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: us6000q3yx). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, March 26, 2025). M4.2 Earthquake 80 km E of Namie, Japan — March 26, 2025. Retrieved June 6, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000q3yx/