M5.4 earthquake — South Sandwich Islands region
A moderate magnitude 5.4 earthquake occurred South Sandwich Islands region on Aug 21, 2026 at 13:06 UTC. The epicenter was at a depth of 159 km — an intermediate-depth earthquake. Intermediate quakes spread their energy over a wider area and are often felt across a broad region.
Event data
| Magnitude | M5.4 |
|---|---|
| Depth | 159.0 km |
| Coordinates | -58.851, -26.557 |
| Time | Aug 21, 13:06 UTC |
| Location | South Sandwich Islands region |
| USGS event ID | us6000tmft |
What this magnitude typically means
Moderate earthquakes are widely felt and can cause light damage close to the epicenter. The shaking you actually experience depends on how far away you are and what kind of ground you are on. Tremor does not compute a single local shaking figure here, because how strong a quake feels at any address depends on distance, depth and local geology — open the interactive globe to explore the ShakeMap and estimated intensity.
Source: USGS earthquake catalog. Automated readings may be revised. Not for emergency use.