M4.2 Earthquake 105 km WNW of San Antonio de los Cobres, Argentina — May 12, 2025
2025-05-12 21:30:52 UTC (2025-05-12) · approx. 5:30 PM UTC-4 local
On May 12, 2025 at 21:30 UTC, a magnitude 4.2 intermediate depth earthquake struck 105 km WNW of San Antonio de los Cobres, Argentina, at a depth of 217.0 km and coordinates -24.0159°, -67.3347°.
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
-67.3347°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.2 earthquake near San Antonio de los Cobres, Argentina?
The magnitude 4.2 earthquake that struck 105 km WNW of San Antonio de los Cobres, Argentina on May 12, 2025 at 21:30 UTC had a depth of 217.0 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: us7000pywq). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, May 12, 2025). M4.2 Earthquake 105 km WNW of San Antonio de los Cobres, Argentina — May 12, 2025. Retrieved July 24, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000pywq/