M3.9 Earthquake 26 km NNE of Santa Rosa de Tastil, Argentina — March 24, 2026
2026-03-24 22:02:17 UTC (2026-03-24) · approx. 6:02 PM UTC-4 local
On March 24, 2026 at 22:02 UTC, a magnitude 3.9 intermediate depth earthquake struck 26 km NNE of Santa Rosa de Tastil, Argentina, at a depth of 276.4 km and coordinates -24.2222°, -65.8914°.
Physical scale: An earthquake of magnitude 3.9 releases seismic energy equivalent to roughly 11 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 296 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-65.8914°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.9 earthquake near Santa Rosa de Tastil, Argentina?
The magnitude 3.9 earthquake that struck 26 km NNE of Santa Rosa de Tastil, Argentina on March 24, 2026 at 22:02 UTC had a depth of 276.4 km. For context, this was a minor earthquake typically detected only by instruments.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.9 earthquakes can continue for several days and gradually diminish over time.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.
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Understanding This Data
Magnitude 3.9 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us7000s7es). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, March 24, 2026). M3.9 Earthquake 26 km NNE of Santa Rosa de Tastil, Argentina — March 24, 2026. Retrieved May 14, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000s7es/