M4.2 Earthquake 63 km WSW of Andacollo, Argentina — September 24, 2026
2026-09-24 23:19:34 UTC (3 hours ago) · approx. 6:19 PM UTC-5 local
On September 24, 2026 at 23:19 UTC, a magnitude 4.2 intermediate depth earthquake struck 63 km WSW of Andacollo, Argentina, at a depth of 174.3 km and coordinates -37.4621°, -71.2930°.
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
-71.2930°E
Technical Information
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Common Questions
How strong was the magnitude 4.2 earthquake near Andacollo, Argentina?
The magnitude 4.2 earthquake that struck 63 km WSW of Andacollo, Argentina on September 24, 2026 at 23:19 UTC had a depth of 174.3 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: us6000txhl). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, September 24, 2026). M4.2 Earthquake 63 km WSW of Andacollo, Argentina — September 24, 2026. Retrieved September 25, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000txhl/