Update: Seismic activity on March 21 – 5.6 magnitude earthquake near San Antonio de los Cobres, Argentina recorded

Published Apr 5, 2026

LOS ANDES DEPARTMENT, Salta Province — A 5.6 magnitude quake occurred close to San Antonio de los Cobres on Saturday morning, the U.S. Geological Survey reported.

The tremor, which shook the area at 10:00 UTC (07:00 local time), was centered about 72 km west-northwest of San Antonio de los Cobres. It occurred at a depth of 192 km.

Did you feel it?

If you felt the earthquake, you can report it via the USGS Felt Report form. 3 people have submitted responses through the agency’s online form, saying they experienced the quake.

Impact and estimated losses

The USGS categorized this as a Green Alert, which means there is a low likelihood of casualties and damage. Recent earthquakes in this area have caused secondary hazards such as landslides that might have contributed to losses.

Structure information summary
Overall, the population in this region resides in structures that are resistant to earthquake shaking, though vulnerable structures exist. The predominant vulnerable building types are adobe block and rubble/field stone masonry construction.

Past week’s tremor

Another magnitude 4.4 quake was detected nearby, with the event also close to San Antonio de los Cobres on Mar. 20.

Source: The U.S. Geological Survey