M4.2 Earthquake 78 km SSW of Vinchina, Argentina — October 19, 2023
2023-10-19 21:23:54 UTC (2023-10-19) · approx. 4:23 PM UTC-5 local
On October 19, 2023 at 21:23 UTC, a magnitude 4.2 intermediate depth earthquake struck 78 km SSW of Vinchina, Argentina, at a depth of 107.8 km and coordinates -29.4204°, -68.4951°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-68.4951°E
Technical Information
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Common Questions
How strong was the magnitude 4.2 earthquake near Vinchina, Argentina?
The magnitude 4.2 earthquake that struck 78 km SSW of Vinchina, Argentina on October 19, 2023 at 21:23 UTC had a depth of 107.8 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 4.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000lgr3). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, October 19, 2023). M4.2 Earthquake 78 km SSW of Vinchina, Argentina — October 19, 2023. Retrieved December 26, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000lgr3/