M4.5 Earthquake 12 km SE of Baixi, China — August 10, 2026
2026-08-10 21:31:44 UTC (8 hours ago) · approx. 4:31 AM UTC+7 local
Aftershock of the M5.1 mainshock.
On August 10, 2026 at 21:31 UTC, a magnitude 4.5 shallow crustal earthquake struck 12 km SE of Baixi, China, at a depth of 55.3 km and coordinates 28.6111°, 104.6343°. This earthquake was detected by 96 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 312, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.5 releases seismic energy equivalent to roughly 85 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 767 m — a useful intuition for the size of the slip patch on the fault.
This earthquake is part of an ongoing aftershock sequence following the magnitude 5.1 mainshock that occurred 4 days ago 6 km NNE of Xunchang, China. Since the mainshock, the USGS has recorded 4 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.
Earthquake Details
104.6343°E
Technical Information
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Common Questions
How strong was the magnitude 4.5 earthquake near Baixi, China?
The magnitude 4.5 earthquake that struck 12 km SE of Baixi, China on August 10, 2026 at 21:31 UTC had a depth of 55.3 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 28.6111°, 104.6343°, which is 12 km SE of Baixi, China.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.5 earthquakes can continue for several days and gradually diminish over time.
Is this the same earthquake as the M5.1 one earlier?
No. This magnitude 4.5 earthquake is an aftershock of the larger magnitude 5.1 mainshock that occurred earlier 6 km NNE of Xunchang, China. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
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Authoritative source: USGS event page (event ID: us6000tjt8). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, August 10, 2026). M4.5 Earthquake 12 km SE of Baixi, China — August 10, 2026. Retrieved August 11, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000tjt8/