M3.8 Earthquake 92 km WNW of Copiapó, Chile — August 11, 2025
2025-08-11 23:38:01 UTC (2025-08-11) · approx. 6:38 PM UTC-5 local
On August 11, 2025 at 23:38 UTC, a magnitude 3.8 shallow crustal earthquake struck 92 km WNW of Copiapó, Chile, at a depth of 22.2 km and coordinates -26.9197°, -71.1251°.
Physical scale: An earthquake of magnitude 3.8 releases seismic energy equivalent to roughly 7.6 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 252 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-71.1251°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.8 earthquake near Copiapó, Chile?
The magnitude 3.8 earthquake that struck 92 km WNW of Copiapó, Chile on August 11, 2025 at 23:38 UTC had a depth of 22.2 km. For context, this was a minor earthquake typically detected only by instruments.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.8 earthquakes can continue for several days and gradually diminish over time.
Actions
Location
Understanding This Data
Magnitude 3.8 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us6000qzzv). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, August 11, 2025). M3.8 Earthquake 92 km WNW of Copiapó, Chile — August 11, 2025. Retrieved October 25, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000qzzv/