M4.3 Earthquake 92 km NW of China, Japan — August 4, 2025
2025-08-04 22:44:44 UTC (2025-08-04) · approx. 7:44 AM UTC+9 local
On August 4, 2025 at 22:44 UTC, a magnitude 4.3 shallow crustal earthquake struck 92 km NW of China, Japan, at a depth of 10.0 km and coordinates 27.9136°, 127.8973°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
127.8973°E
Technical Information
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Common Questions
How strong was the magnitude 4.3 earthquake near China, Japan?
The magnitude 4.3 earthquake that struck 92 km NW of China, Japan on August 4, 2025 at 22:44 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 4.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000qre0). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, August 4, 2025). M4.3 Earthquake 92 km NW of China, Japan — August 4, 2025. Retrieved October 17, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000qre0/