M4.7 Earthquake 15 km ESE of Simao, China — August 20, 2024
2024-08-20 15:04:38 UTC (2024-08-20) · approx. 10:04 PM UTC+7 local
On August 20, 2024 at 15:04 UTC, a magnitude 4.7 shallow crustal earthquake struck 15 km ESE of Simao, China, at a depth of 13.2 km and coordinates 22.7449°, 101.1232°. This earthquake was detected by 100 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 340, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.7 releases seismic energy equivalent to roughly 169 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.1 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
101.1232°E
Technical Information
Common Questions
How strong was the magnitude 4.7 earthquake near Simao, China?
The magnitude 4.7 earthquake that struck 15 km ESE of Simao, China on August 20, 2024 at 15:04 UTC had a depth of 13.2 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 22.7449°, 101.1232°, which is 15 km ESE of Simao, China.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.7 earthquakes can continue for several days and gradually diminish over time.
Actions
Location
Authoritative source: USGS event page (event ID: us7000n89f). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, August 20, 2024). M4.7 Earthquake 15 km ESE of Simao, China — August 20, 2024. Retrieved November 2, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000n89f/