M4.9 Earthquake 85 km NNW of Tumxuk, China — September 2, 2025
2025-09-02 07:58:49 UTC (2025-09-02) · approx. 12:58 PM UTC+5 local
On September 2, 2025 at 07:58 UTC, a magnitude 4.9 shallow crustal earthquake struck 85 km NNW of Tumxuk, China, at a depth of 10.0 km and coordinates 40.6139°, 78.8172°. This earthquake was detected by 92 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 369, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.9 releases seismic energy equivalent to roughly 338 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.4 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
78.8172°E
Technical Information
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Common Questions
How strong was the magnitude 4.9 earthquake near Tumxuk, China?
The magnitude 4.9 earthquake that struck 85 km NNW of Tumxuk, China on September 2, 2025 at 07:58 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 40.6139°, 78.8172°, which is 85 km NNW of Tumxuk, China.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.9 earthquakes can continue for several days and gradually diminish over time.
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Location
Authoritative source: USGS event page (event ID: us7000qt80). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, September 2, 2025). M4.9 Earthquake 85 km NNW of Tumxuk, China — September 2, 2025. Retrieved November 19, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000qt80/