M4.5 earthquake — South Sandwich Islands region
An magnitude 4.5 earthquake occurred South Sandwich Islands region on Oct 18, 2026 at 04:34 UTC. The epicenter was at a depth of 71 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 | M4.5 |
|---|---|
| Depth | 71.5 km |
| Coordinates | -56.608, -26.274 |
| Time | Oct 18, 04:34 UTC |
| Location | South Sandwich Islands region |
| USGS event ID | us7000ttpt |
What this magnitude typically means
Light earthquakes are felt by most people nearby but rarely cause damage. Distance, depth, and soil type determine whether a quake feels sharp or barely noticeable. 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.
Nearby recent earthquakes
| Magnitude | Distance | Time (UTC) | Location |
|---|---|---|---|
| M5.1 | 69 km | Nov 1, 17:11 UTC | South Sandwich Islands region |
| M5.0 | 244 km | Nov 3, 13:34 UTC | South Sandwich Islands region |
Source: USGS earthquake catalog. Automated readings may be revised. Not for emergency use.