M4.1 Earthquake 94 km E of Minami-Sōma, Japan — January 25, 2025
2025-01-25 22:39:13 UTC (2025-01-25) · approx. 7:39 AM UTC+9 local
On January 25, 2025 at 22:39 UTC, a magnitude 4.1 shallow crustal earthquake struck 94 km E of Minami-Sōma, Japan, at a depth of 64.0 km and coordinates 37.7013°, 142.0433°.
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
142.0433°E
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Common Questions
How strong was the magnitude 4.1 earthquake near Minami-Sōma, Japan?
The magnitude 4.1 earthquake that struck 94 km E of Minami-Sōma, Japan on January 25, 2025 at 22:39 UTC had a depth of 64.0 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 4.1 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: us7000pb22). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, January 25, 2025). M4.1 Earthquake 94 km E of Minami-Sōma, Japan — January 25, 2025. Retrieved April 8, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000pb22/