M5.6 Earthquake 72 km WNW of San Antonio de los Cobres, Argentina — March 21, 2026
2026-03-21 10:00:37 UTC (2026-03-21)
Felt by 3 people across nearby locations.
On March 21, 2026 at 10:00 UTC, a magnitude 5.6 intermediate depth earthquake struck 72 km WNW of San Antonio de los Cobres, Argentina, at a depth of 191.9 km and coordinates -24.0161°, -66.9940°. The earthquake was reported felt by 3 peopleacross nearby locations, with a maximum shaking intensity of Modified Mercalli Intensity (MMI) 3.4 (light). The USGS PAGER system issued a green alert level for this event, indicating no significant casualties or damage expected. This earthquake was detected by 97 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 483, placing it among routine seismic activity. The nearest populated place is San Antonio de los Cobres (population 5,482).
Nearest Populated Places
Earthquake Details
-66.9940°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 5.6 earthquake near San Antonio de los Cobres, Argentina?
The magnitude 5.6 earthquake that struck 72 km WNW of San Antonio de los Cobres, Argentina on March 21, 2026 at 10:00 UTC had a depth of 191.9 km. It was felt by 3 people with maximum shaking intensity of MMI 3.4 (light). For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at -24.0161°, -66.9940°, which is 72 km WNW of San Antonio de los Cobres, Argentina. The nearest populated place is San Antonio de los Cobres (population 5,482).
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.6 earthquakes can continue for days to weeks and gradually diminish over time.
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.