M4.3 Earthquake 40 km ESE of San Pedro de Atacama, Chile — October 25, 2026
2026-10-25 13:23:15 UTC (1 day ago) · approx. 8:23 AM UTC-5 local
On October 25, 2026 at 13:23 UTC, a magnitude 4.3 intermediate depth earthquake struck 40 km ESE of San Pedro de Atacama, Chile, at a depth of 136.0 km and coordinates -23.0909°, -67.8582°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-67.8582°E
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Common Questions
How strong was the magnitude 4.3 earthquake near San Pedro de Atacama, Chile?
The magnitude 4.3 earthquake that struck 40 km ESE of San Pedro de Atacama, Chile on October 25, 2026 at 13:23 UTC had a depth of 136.0 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 4.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000u4ua). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, October 25, 2026). M4.3 Earthquake 40 km ESE of San Pedro de Atacama, Chile — October 25, 2026. Retrieved October 26, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000u4ua/