M 5.3 Earthquake 51 km WSW of Arauco, Argentina
A magnitude 5.3 earthquake was recorded by USGS near 51 km WSW of Arauco. On the USGS Earthquake Hazards Program scale, M5.3 is classified "Moderate". Among the 1,834 earthquake reports Areazine has published, this M5.3 event ranks stronger than 80% of them (rank #270 by magnitude).
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- Magnitude
- M 5.3
- USGS class
- Moderate
- Location
- 51 km WSW of Arauco
- Archive rank
- #270 of 1,834
- Source
- USGS
- Published
- September 23, 2026
Stronger than 80% of the 1,834 earthquake reports in Areazine's archive, weaker than 269 others.
Record status: a snapshot from USGS, not a final record. Check USGS's own event page for aftershocks and any later revision to the magnitude shown here.
What Happened
A M 5.3 mww earthquake occurred 51 km WSW of Arauco, Argentina, on 2026-09-23 at 12:01:14 UTC. The event was recorded at a depth of 121.534 km and was reviewed by the USGS.
Location Details
The epicenter was located at latitude -28.7298, longitude -67.2912. This depth classifies the quake as deep (greater than 70 km).
Impact Assessment
No felt reports, tsunami advisory, or alert level were recorded for this event. The tsunami flag was set to 0.
What You Should Know
Earthquakes of this magnitude can be noticeable but are unlikely to cause significant damage. Aftershocks remain possible following any seismic event.
Source
Data from USGS: https://earthquake.usgs.gov/earthquakes/eventpage/us6000tx29
Original source: USGS Official Notice ↗
Related Earthquakes
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Two Areazine-derived peer sets for this USGS earthquake report: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (737 characters here).
Similar severity timing
Same severity (medium) notices issued closest in time to September 23, 2026.
What People Ask
Common questions about this USGS earthquake report.