M4.6 Earthquake 90 km ENE of Nagqu, China — August 17, 2021
2021-08-17 20:20:11 UTC (2021-08-17) · approx. 2:20 AM UTC+6 local
On August 17, 2021 at 20:20 UTC, a magnitude 4.6 shallow crustal earthquake struck 90 km ENE of Nagqu, China, at a depth of 10.0 km and coordinates 31.9037°, 92.8722°.
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
92.8722°E
Technical Information
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Common Questions
How strong was the magnitude 4.6 earthquake near Nagqu, China?
The magnitude 4.6 earthquake that struck 90 km ENE of Nagqu, China on August 17, 2021 at 20:20 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 31.9037°, 92.8722°, which is 90 km ENE of Nagqu, 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: us7000f4ue). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, August 17, 2021). M4.6 Earthquake 90 km ENE of Nagqu, China — August 17, 2021. Retrieved October 29, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000f4ue/