Earthquake · South Sandwich Islands region
M6.4 earthquake near South Sandwich Islands region
A magnitude 6.4 earthquake struck South Sandwich Islands region on 11 July 2026 at 10:26 UTC, at a depth of 26 km.
- Magnitude
- 6.4 mww
- When
- 11 July 2026, 10:26 UTC
- Depth
- 26 km
- Location
- 55.53° S, 28.91° W
- Strongest shaking (estimated)
- Intensity IV (light)
- USGS PAGER alert
- Green
- Source
- USGS event page
What it means
A magnitude 6.4 is a strong earthquake; there are about 130 a year worldwide, and they can cause damage in populated areas near the epicentre. At 26 km deep it was a shallow earthquake, which usually means stronger shaking near the epicentre.
The magnitude may be revised as more data comes in. Read Earthquake magnitude explained for what the numbers mean.
Aftershocks
6 earthquakes of magnitude 4 or more within 150 km in the 30 days after; the largest was a magnitude 5.1.
| Mag | Where | When (UTC) |
|---|---|---|
| 5.1 | South Sandwich Islands region | 29 July 2026, 10:30 |
| 4.7 | South Sandwich Islands region | 4 August 2026, 23:08 |
| 4.6 | South Sandwich Islands region | 12 July 2026, 15:15 |
| 4.6 | South Sandwich Islands region | 25 July 2026, 21:02 |
| 4.5 | South Sandwich Islands region | 15 July 2026, 23:57 |
| 4.5 | South Sandwich Islands region | 26 July 2026, 21:01 |
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