Earthquakes in Argentina — March 2026
14 earthquakes were recorded in Argentina during March 2026, an average of 0.5 per day.
14 reached magnitude 4 or above and 3 reached magnitude 5 or above. The average focal depth was 156 km.
The month's largest event in Argentina was a magnitude 5.6 earthquake near San Antonio de los Cobres, Argentina on 21 March 2026 at 10:00 UTC. A magnitude 5.6 earthquake radiates roughly 3,788 tons of TNT equivalent in seismic energy.
That is close to the Argentina monthly average of 18 events over the period we cover, and down from the 18 recorded the previous month.
14% of events here are shallow (under 70 km), 86% intermediate (70–300 km) and 0% deep-focus (over 300 km). A substantial share of intermediate-depth events points to a subducting slab beneath the region rather than purely crustal faulting.
By band, the catalogue holds 11 in the magnitude 4 range, 3 in the magnitude 5 range.
Activity peaked on 14 March, when 2 events were recorded.
The month's largest events were M5.6 near San Antonio de los Cobres, Argentina on 21 March at 193 km; M5.1 near Calingasta, Argentina on 09 March at 112 km; M5.1 near Caucete, Argentina on 07 March at 146 km.
That is 23% below the 18 events Argentina averages per month across the 21 months on record.
Largest earthquakes in Argentina, March 2026
14 events listed below, newest first. Times are UTC. Click any column header to re-sort.
| Time (UTC) | Mag | Location | Depth (km) | Country | Details |
|---|---|---|---|---|---|
| 5.6 | San Antonio de los Cobres, Argentina | 192.6 | Argentina | View details View | |
| 5.1 | Calingasta, Argentina | 111.8 | Argentina | View details View | |
| 5.1 | Caucete, Argentina | 146.4 | Argentina | View details View | |
| 4.7 | Lago Puelo, Argentina | 6.0 | Argentina | View details View | |
| 4.6 | Candelaria, Argentina | 128.0 | Argentina | View details View | |
| 4.5 | El Aguilar, Argentina | 206.0 | Argentina | View details View | |
| 4.5 | El Aguilar, Argentina | 229.5 | Argentina | View details View | |
| 4.5 | Calingasta, Argentina | 127.3 | Argentina | View details View | |
| 4.4 | San Antonio de los Cobres, Argentina | 194.9 | Argentina | View details View | |
| 4.4 | San Antonio de los Cobres, Argentina | 219.3 | Argentina | View details View | |
| 4.3 | Santa Rosa de Tastil, Argentina | 275.7 | Argentina | View details View | |
| 4.3 | Pocito, Argentina | 15.8 | Argentina | View details View | |
| 4.2 | Chilecito, Argentina | 123.5 | Argentina | View details View | |
| 4.2 | San Antonio de los Cobres, Argentina | 204.5 | Argentina | View details View |
Frequently asked questions
How many earthquakes hit Argentina in March 2026?
14 earthquakes were recorded in Argentina during March 2026, of which 14 were magnitude 4 or above.
What was the biggest earthquake in Argentina in March 2026?
A magnitude 5.6 event near San Antonio de los Cobres, Argentina on 21 March 2026.
Other months in Argentina
Magnitudes for March 2026 reflect the current USGS review status and may have been revised since first publication. See our guides on the magnitude scale, focal depth and why earthquakes cluster.