M4.1 Earthquake 29 km NW of Dali, China — June 28, 2021
2021-06-28 22:41:29 UTC (2021-06-28) · approx. 5:41 AM UTC+7 local
On June 28, 2021 at 22:41 UTC, a magnitude 4.1 shallow crustal earthquake struck 29 km NW of Dali, China, at a depth of 10.0 km and coordinates 25.7746°, 100.0072°.
Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
100.0072°E
Technical Information
Common Questions
How strong was the magnitude 4.1 earthquake near Dali, China?
The magnitude 4.1 earthquake that struck 29 km NW of Dali, China on June 28, 2021 at 22:41 UTC had a depth of 10.0 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 4.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.1 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000ei8q). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, June 28, 2021). M4.1 Earthquake 29 km NW of Dali, China — June 28, 2021. Retrieved September 9, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000ei8q/