M3.1 earthquake — 43 km NW of San Antonio, Puerto Rico
An magnitude 3.1 earthquake occurred 43 km NW of San Antonio, Puerto Rico on Aug 23, 2026 at 08:57 UTC. The epicenter was at a depth of 5 km — a shallow earthquake. Shallow quakes concentrate their energy near the surface, so they tend to produce stronger shaking close to the epicenter.
Event data
| Magnitude | M3.1 |
|---|---|
| Depth | 5.0 km |
| Coordinates | 18.789, -67.372 |
| Time | Aug 23, 08:57 UTC |
| Location | 43 km NW of San Antonio, Puerto Rico |
| USGS event ID | pr71529488 |
What this magnitude typically means
Minor earthquakes are often felt close to the epicenter but almost never cause damage. Whether you feel one at all depends on how near and how shallow it is. 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 |
|---|---|---|---|
| M3.0 | 5 km | Aug 24, 12:00 UTC | 38 km NW of San Antonio, Puerto Rico |
| M2.9 | 16 km | Aug 24, 17:16 UTC | 56 km NW of San Antonio, Puerto Rico |
| M3.2 | 21 km | Aug 22, 06:22 UTC | 62 km NW of San Antonio, Puerto Rico |
| M3.3 | 40 km | Aug 23, 01:33 UTC | 82 km NW of San Antonio, Puerto Rico |
| M3.7 | 50 km | Aug 22, 05:50 UTC | 83 km NE of Punta Cana, Dominican Republic |
| M2.5 | 51 km | Aug 24, 04:52 UTC | 13 km W of Rincón, Puerto Rico |
Earthquake activity in this area
Source: USGS earthquake catalog. Automated readings may be revised. Not for emergency use.