M4.3 Earthquake 30 km ESE of Salamanca, Chile — August 20, 2022
2022-08-20 21:15:48 UTC (2022-08-20) · approx. 4:15 PM UTC-5 local
On August 20, 2022 at 21:15 UTC, a magnitude 4.3 intermediate depth earthquake struck 30 km ESE of Salamanca, Chile, at a depth of 101.4 km and coordinates -31.8585°, -70.6605°.
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
-70.6605°E
Technical Information
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Common Questions
How strong was the magnitude 4.3 earthquake near Salamanca, Chile?
The magnitude 4.3 earthquake that struck 30 km ESE of Salamanca, Chile on August 20, 2022 at 21:15 UTC had a depth of 101.4 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: us6000icfk). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, August 20, 2022). M4.3 Earthquake 30 km ESE of Salamanca, Chile — August 20, 2022. Retrieved November 1, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000icfk/