M4.0 Earthquake 64 km NNE of Calama, Chile — September 22, 2020
2020-09-22 19:30:53 UTC (2020-09-22) · approx. 2:30 PM UTC-5 local
On September 22, 2020 at 19:30 UTC, a magnitude 4.0 intermediate depth earthquake struck 64 km NNE of Calama, Chile, at a depth of 118.7 km and coordinates -21.9149°, -68.6878°.
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
-68.6878°E
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Common Questions
How strong was the magnitude 4.0 earthquake near Calama, Chile?
The magnitude 4.0 earthquake that struck 64 km NNE of Calama, Chile on September 22, 2020 at 19:30 UTC had a depth of 118.7 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: us6000bzrh). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, September 22, 2020). M4.0 Earthquake 64 km NNE of Calama, Chile — September 22, 2020. Retrieved November 28, 2020 from https://www.earthquaketracker.org/earthquakes/event/us6000bzrh/