M4.7 Earthquake 102 km W of San Antonio de los Cobres, Argentina — April 16, 2026
2026-04-16 08:51:19 UTC (3 days ago)
Aftershock of the M5.6 mainshock.
On April 16, 2026 at 08:51 UTC, a magnitude 4.7 intermediate depth earthquake struck 102 km W of San Antonio de los Cobres, Argentina, at a depth of 192.9 km and coordinates -24.2004°, -67.3302°. This earthquake was detected by 21 seismic stations with good location accuracy and was assigned a USGS significance rating of 340, placing it among routine seismic activity.
This earthquake is part of an ongoing aftershock sequence following the magnitude 5.6 mainshock that occurred 29 days ago 72 km WNW of San Antonio de los Cobres, Argentina. Since the mainshock, the USGS has recorded 3 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.
Earthquake Details
-67.3302°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.7 earthquake near San Antonio de los Cobres, Argentina?
The magnitude 4.7 earthquake that struck 102 km W of San Antonio de los Cobres, Argentina on April 16, 2026 at 08:51 UTC had a depth of 192.9 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -24.2004°, -67.3302°, which is 102 km W of San Antonio de los Cobres, Argentina.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.7 earthquakes can continue for several days and gradually diminish over time.
Is this the same earthquake as the M5.6 one earlier?
No. This magnitude 4.7 earthquake is an aftershock of the larger magnitude 5.6 mainshock that occurred earlier 72 km WNW of San Antonio de los Cobres, Argentina. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.