M4.2 Earthquake 83 km WNW of El Aguilar, Argentina — May 23, 2026
2026-05-23 01:42:19 UTC (45 min ago) · approx. 9:42 PM UTC-4 local
On May 23, 2026 at 01:42 UTC, a magnitude 4.2 intermediate depth earthquake struck 83 km WNW of El Aguilar, Argentina, at a depth of 242.2 km and coordinates -23.0154°, -66.4641°.
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
-66.4641°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.2 earthquake near El Aguilar, Argentina?
The magnitude 4.2 earthquake that struck 83 km WNW of El Aguilar, Argentina on May 23, 2026 at 01:42 UTC had a depth of 242.2 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.
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.
Actions
Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000szm4). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, May 23, 2026). M4.2 Earthquake 83 km WNW of El Aguilar, Argentina — May 23, 2026. Retrieved May 23, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000szm4/