M4.1 Earthquake 9 km NNE of Sarabetsu, Japan — July 11, 2025
2025-07-11 18:43:58 UTC (2025-07-11) · approx. 4:43 AM UTC+10 local
On July 11, 2025 at 18:43 UTC, a magnitude 4.1 shallow crustal earthquake struck 9 km NNE of Sarabetsu, Japan, at a depth of 10.0 km and coordinates 42.7322°, 143.2454°.
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
143.2454°E
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Common Questions
How strong was the magnitude 4.1 earthquake near Sarabetsu, Japan?
The magnitude 4.1 earthquake that struck 9 km NNE of Sarabetsu, Japan on July 11, 2025 at 18:43 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 4.1 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: us7000qc4t). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, July 11, 2025). M4.1 Earthquake 9 km NNE of Sarabetsu, Japan — July 11, 2025. Retrieved November 28, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000qc4t/