Earthquake
M 5.3 earthquake, 51 km WSW of Arauco, Argentina
Origin time: 2026-09-23 09:21 UTC
- Magnitude
- M 5.3 (mww)
- Depth
- 122 km
4 felt reports
Reviewed by a USGS seismologist
Revised by USGS · 2026-09-23 15:54 UTC
What this tells you
Magnitude measures quake size. It does not confirm injuries or damage.
- Nearest indexed city
- La Rioja, Argentina · 86 km
- People nearby
- 338,000 in 2 towns and cities within 200 km. Proximity, not people affected. Source: GeoNames indexed cities.
Population on live map
2020 estimates · people/km². Population context, not people affected.
Citation & source notes
- Origin time
- 2026-09-23 09:21 UTC
- Agency revision
- 2026-09-23 15:54 UTC
- Retrieved by this site
- 2026-10-11 19:47 UTC
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Agency measurements and details
- Magnitude
- M 5.3 (mww)
- Depth
- 122 km
- Origin time
- 2026-09-23 09:21 UTC
- Status
- Reviewed by USGS
- Last revised
- 2026-09-23 15:54 UTC
- Felt reports
- 4 responses
In this region
Checking the regional catalog…
USGS earthquake catalog
Nearby USGS reports
M2.5+ seven-day feed · within 500 km of this event. Up to 5 nearest reports; proximity does not establish an aftershock or impact.
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