M5.3 Earthquake Recorded Near 51 km WSW of Arauco, Argentina
USGS Week reports M5.3 near 51 km WSW of Arauco, Argentina, with a 121.5 km catalog depth.
The event began at Wed, 23 Sep 2026 09:21:14 GMT. USGS Week reports magnitude 5.3, 121.5 km catalog depth, and coordinates -28.730, -67.291.
The catalog location label is 51 km WSW of Arauco, Argentina; no separate nearest-city field was supplied with this solution. By catalog depth, this is an intermediate-depth event. The magnitude-derived energy estimate is 5.62e+12 joules, or about 1,344 tons of TNT equivalent; that calculation describes source energy, not local damage.
The current catalog entry does not include a public felt-report count. Other attached observation fields include catalog significance score 432. No official casualty or damage statement is attached to the normalized event evidence.
The USGS Week catalog currently marks the solution as reviewed. No station-count, phase-count, residual, gap, or uncertainty fields were supplied in the normalized record. 1 alternate network solution is retained for comparison.
The provider record does not carry a tsunami flag at publication time. Magnitude, depth, and location can change as monitoring networks add observations and review the solution.
At a glance
- Magnitude 5.3
- 121.5 km catalog depth
- 5.62e+12 J magnitude-derived energy estimate
- Origin: Wed, 23 Sep 2026 09:21:14 GMT
- No felt-report count supplied
- USGS Week monitoring record