M4.0 Earthquake 78 km SW of Dali, China — July 13, 2020
2020-07-13 17:34:01 UTC (2020-07-13) · approx. 12:34 AM UTC+7 local
On July 13, 2020 at 17:34 UTC, a magnitude 4.0 shallow crustal earthquake struck 78 km SW of Dali, China, at a depth of 10.0 km and coordinates 25.1767°, 99.5735°.
Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
99.5735°E
Technical Information
Common Questions
How strong was the magnitude 4.0 earthquake near Dali, China?
The magnitude 4.0 earthquake that struck 78 km SW of Dali, China on July 13, 2020 at 17:34 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 4.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000arpk). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, July 13, 2020). M4.0 Earthquake 78 km SW of Dali, China — July 13, 2020. Retrieved September 19, 2020 from https://www.earthquaketracker.org/earthquakes/event/us7000arpk/