M4.0 Earthquake 51 km NE of Calama, Chile — November 3, 2025
2025-11-03 21:22:01 UTC (2025-11-03) · approx. 4:22 PM UTC-5 local
On November 3, 2025 at 21:22 UTC, a magnitude 4.0 intermediate depth earthquake struck 51 km NE of Calama, Chile, at a depth of 121.8 km and coordinates -22.0936°, -68.6170°.
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
-68.6170°E
Technical Information
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Common Questions
How strong was the magnitude 4.0 earthquake near Calama, Chile?
The magnitude 4.0 earthquake that struck 51 km NE of Calama, Chile on November 3, 2025 at 21:22 UTC had a depth of 121.8 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: us6000rl8x). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, November 3, 2025). M4.0 Earthquake 51 km NE of Calama, Chile — November 3, 2025. Retrieved January 27, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000rl8x/