M4.6 Earthquake 12 km NNW of Hualin, China — September 27, 2025
2025-09-27 20:25:01 UTC (2025-09-27) · approx. 3:25 AM UTC+7 local
On September 27, 2025 at 20:25 UTC, a magnitude 4.6 shallow crustal earthquake struck 12 km NNW of Hualin, China, at a depth of 10.0 km and coordinates 34.9228°, 104.6734°. This earthquake was detected by 45 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 326, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
104.6734°E
Technical Information
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Common Questions
How strong was the magnitude 4.6 earthquake near Hualin, China?
The magnitude 4.6 earthquake that struck 12 km NNW of Hualin, China on September 27, 2025 at 20:25 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 34.9228°, 104.6734°, which is 12 km NNW of Hualin, China.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 earthquakes can continue for several days and gradually diminish over time.
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Location
Authoritative source: USGS event page (event ID: us6000rhx1). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, September 27, 2025). M4.6 Earthquake 12 km NNW of Hualin, China — September 27, 2025. Retrieved December 11, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000rhx1/