M4.2 Earthquake 71 km WSW of Zhaotong, China — October 3, 2022
2022-10-03 23:19:37 UTC (2022-10-03) · approx. 6:19 AM UTC+7 local
On October 3, 2022 at 23:19 UTC, a magnitude 4.2 shallow crustal earthquake struck 71 km WSW of Zhaotong, China, at a depth of 15.7 km and coordinates 27.0194°, 103.0731°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
103.0731°E
Technical Information
Common Questions
How strong was the magnitude 4.2 earthquake near Zhaotong, China?
The magnitude 4.2 earthquake that struck 71 km WSW of Zhaotong, China on October 3, 2022 at 23:19 UTC had a depth of 15.7 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 4.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000irv9). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, October 3, 2022). M4.2 Earthquake 71 km WSW of Zhaotong, China — October 3, 2022. Retrieved December 10, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000irv9/