M5.7 Earthquake 15 km WSW of El Hoyo, Argentina — October 2, 2025
2025-10-02 21:37:57 UTC (2025-10-02) · approx. 5:37 PM UTC-4 local
On October 2, 2025 at 21:37 UTC, a magnitude 5.7 deep-focus earthquake struck 15 km WSW of El Hoyo, Argentina, at a depth of 559.2 km and coordinates -27.0643°, -63.3875°. The USGS PAGER system issued a green alert level for this event, indicating no significant casualties or damage expected. This earthquake was detected by 102 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 500, placing it among routine seismic activity. The nearest populated place is La Banda (population 0).
Physical scale: An earthquake of magnitude 5.7 releases seismic energy equivalent to roughly 5 kilotons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 5.2 km — a useful intuition for the size of the slip patch on the fault.
Nearest Populated Places
ShakeMap — predicted shaking intensity
Modeled ground-motion intensity contoured on the Modified Mercalli scale (MMI). Computed by the USGS from the moment-tensor solution and regional ground-motion prediction equations.
Source: U.S. Geological Survey ShakeMap. View interactive ShakeMap on USGS
Population exposure (USGS PAGER)
Estimated population that experienced each level of shaking. Based on the USGS PAGER rapid impact assessment, which combines ShakeMap output with global population grids.
| Shaking intensity (MMI) | Description | Population exposed |
|---|
Earthquake Details
-63.3875°E
Technical Information
Common Questions
How strong was the magnitude 5.7 earthquake near El Hoyo, Argentina?
The magnitude 5.7 earthquake that struck 15 km WSW of El Hoyo, Argentina on October 2, 2025 at 21:37 UTC had a depth of 559.2 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at -27.0643°, -63.3875°, which is 15 km WSW of El Hoyo, Argentina. The nearest populated place is La Banda (population 0).
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.7 earthquakes can continue for days to weeks 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.
Authoritative source: USGS event page (event ID: us6000recz). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, October 2, 2025). M5.7 Earthquake 15 km WSW of El Hoyo, Argentina — October 2, 2025. Retrieved May 27, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000recz/