M4.0 earthquake 34 km WSW of San Martín, Argentina
A magnitude 4.0 earthquake struck 34 km WSW of San Martín, Argentina at Jul 27, 9:37 PM ET, 35 km deep, light – felt by most people nearby, rattling windows, rarely damage. 16 people reported feeling it.
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| Magnitude | 4.0 mwr |
| Time | 28 Jul 2026, 01:37 UTC |
| Location | -33.209°, -68.806° – 34 km WSW of San Martín, Argentina |
| Depth | 35.0 km |
| Felt reports | 16 |
| USGS event | us6000tg9q |
Other earthquakes nearby this year
| Mag. | Where | When (ET) | Depth | Felt |
|---|---|---|---|---|
| 4.5 | 46 km W of Mendoza, Argentina | Sep 18, 2:03 PM 393 d ago | 121 km | 3 reports |
| 4.4 | 34 km SW of San Martín, Argentina | May 27, 11:15 PM 142 d ago | 10 km | – |
| 3.9 | 29 km S of Mendoza, Argentina | Aug 6, 8:00 PM 71 d ago | 10 km | 8 reports |
About this earthquake
How strong was the 34 km WSW of San Martín, Argentina earthquake?
Magnitude 4.0 (mwr), light – felt by most people nearby, rattling windows, rarely damage. Depth 35 km.
Was it felt?
16 people reported feeling it to the USGS "Did You Feel It?" survey; the highest reported intensity was 3.8.
Were there aftershocks?
1 earthquakes within 100 km in the following two weeks are in our records, the strongest M3.9.
More
Source: U.S. Geological Survey (USGS) earthquake catalog, real-time feeds and FDSN event service; magnitudes and locations are revised by seismologists for hours after an event. Times are Eastern (ET) unless marked UTC. Not an alert service: for warnings follow local authorities and tsunami centers.