M3.9 Earthquake 24 km E of Calama, Chile — June 26, 2021
2021-06-26 19:30:50 UTC (2021-06-26) · approx. 2:30 PM UTC-5 local
On June 26, 2021 at 19:30 UTC, a magnitude 3.9 intermediate depth earthquake struck 24 km E of Calama, Chile, at a depth of 123.4 km and coordinates -22.4292°, -68.6863°.
Physical scale: An earthquake of magnitude 3.9 releases seismic energy equivalent to roughly 11 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 296 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-68.6863°E
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Common Questions
How strong was the magnitude 3.9 earthquake near Calama, Chile?
The magnitude 3.9 earthquake that struck 24 km E of Calama, Chile on June 26, 2021 at 19:30 UTC had a depth of 123.4 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 3.9 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.9 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us6000eq1x). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, June 26, 2021). M3.9 Earthquake 24 km E of Calama, Chile — June 26, 2021. Retrieved September 9, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000eq1x/