M4.0 Earthquake 83 km SW of San Antonio, Chile — July 3, 2024
2024-07-03 22:39:59 UTC (2024-07-03) · approx. 5:39 PM UTC-5 local
On July 3, 2024 at 22:39 UTC, a magnitude 4.0 shallow crustal earthquake struck 83 km SW of San Antonio, Chile, at a depth of 17.8 km and coordinates -34.1388°, -72.2364°.
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
-72.2364°E
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Common Questions
How strong was the magnitude 4.0 earthquake near San Antonio, Chile?
The magnitude 4.0 earthquake that struck 83 km SW of San Antonio, Chile on July 3, 2024 at 22:39 UTC had a depth of 17.8 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: us7000mwya). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, July 3, 2024). M4.0 Earthquake 83 km SW of San Antonio, Chile — July 3, 2024. Retrieved September 12, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000mwya/