M5.4 Earthquake 47 km WNW of San Antonio de los Cobres, Argentina — July 24, 2026
2026-07-24 19:38:42 UTC (1 hour ago) · approx. 3:38 PM UTC-4 local
On July 24, 2026 at 19:38 UTC, a magnitude 5.4 intermediate depth earthquake struck 47 km WNW of San Antonio de los Cobres, Argentina, at a depth of 197.2 km and coordinates -24.0121°, -66.7282°. The USGS PAGER system issued a green alert level for this event, indicating no significant casualties or damage expected. This earthquake was detected by 88 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 449, placing it among routine seismic activity. The nearest populated place is San Antonio de los Cobres (population 5,482).
Physical scale: An earthquake of magnitude 5.4 releases seismic energy equivalent to roughly 2 kilotons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 3.2 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 |
|---|---|---|
| MMI 3 | weak | 1,626,228 |
Earthquake Details
-66.7282°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 5.4 earthquake near San Antonio de los Cobres, Argentina?
The magnitude 5.4 earthquake that struck 47 km WNW of San Antonio de los Cobres, Argentina on July 24, 2026 at 19:38 UTC had a depth of 197.2 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at -24.0121°, -66.7282°, which is 47 km WNW of San Antonio de los Cobres, Argentina. The nearest populated place is San Antonio de los Cobres (population 5,482).
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.4 earthquakes can continue for days to weeks and gradually diminish over time.
Authoritative source: USGS event page (event ID: us7000t36n). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 24, 2026). M5.4 Earthquake 47 km WNW of San Antonio de los Cobres, Argentina — July 24, 2026. Retrieved July 24, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000t36n/