Earthquake measuring 5.3 strikes area close to Arauco, Argentina on Sept. 23

Published Sep 23, 2026

FAMATINA DEPARTMENT, La Rioja Province — A 5.3 magnitude quake occurred near Arauco on Wednesday morning, according to the U.S. Geological Survey.

The tremor, which shook the region at 09:21 UTC (06:21 local time), was centered approximately 51 km west-southwest of Arauco. It occurred at a depth of 122 km.

Did you feel it?

If you experienced the earthquake, you can share your observations using the USGS Felt Report form.

Source: The U.S. Geological Survey