M5.4 earthquake South Sandwich Islands region
A magnitude 5.4 earthquake struck South Sandwich Islands region at Feb 16, 10:36 PM ET, 10 km deep, moderate – felt widely, some damage to weak buildings.
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| Magnitude | 5.4 mww |
| Time | 17 Feb 2026, 03:36 UTC |
| Location | -57.357°, -30.135° – South Sandwich Islands region |
| Depth | 10.0 km |
| Felt reports | 0 |
| Max. estimated intensity (MMI) | 2.7 |
| PAGER alert | green |
| USGS event | us6000s9p3 |
Other earthquakes nearby this year
| Mag. | Where | When (ET) | Depth | Felt |
|---|---|---|---|---|
| 4.9 | South Sandwich Islands region | Apr 6, 9:09 AM 194 d ago | 10 km | – |
| 4.9 | South Sandwich Islands region | Feb 16, 9:20 PM 243 d ago | 10 km | – |
| 4.8 | South Sandwich Islands region | Feb 16, 10:13 PM 243 d ago | 10 km | – |
| 4.7 | South Sandwich Islands region | Feb 16, 9:25 PM 243 d ago | 10 km | – |
| 4.6 | South Sandwich Islands region | Apr 23, 5:08 AM 178 d ago | 10 km | – |
| 4.6 | South Sandwich Islands region | Feb 17, 5:59 AM 243 d ago | 10 km | – |
| 4.5 | South Sandwich Islands region | Feb 17, 4:44 AM 243 d ago | 10 km | – |
About this earthquake
How strong was the South Sandwich Islands region earthquake?
Magnitude 5.4 (mww), moderate – felt widely, some damage to weak buildings. Depth 10 km. Strongest estimated shaking: intensity 2.7 on the Modified Mercalli scale.
Was it felt?
No felt reports have been submitted to the USGS so far.
Were there aftershocks?
2 earthquakes within 100 km in the following two weeks are in our records, the strongest M4.6.
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.