A magnitude 4.8 earthquake struck 5 km southwest of Guánica on Friday morning, according to the U.S. Geological Survey. USGS timed it at 9:19 AM.
USGS puts the depth at 7 km — shallow, which is why a quake this size is felt widely. 82 people had filed “Did You Feel It?” reports with USGS, and USGS estimates the shaking at intensity IV.
USGS’s PAGER impact estimate is green — no significant damage or casualties expected. USGS did not flag a tsunami for this event.
The nearest towns are Guánica (5 km), Cabo Rojo (27 km), Mayagüez (36 km). 32 aftershocks within 30 km had been recorded by the time of writing.
The largest was a magnitude 3.4 at 1:20 PM. The same area had 5 smaller quakes in the two days before.
The epicentre is 14 km from Indios, Guayanilla. That is where the magnitude 6.4 earthquake of January 7, 2020 struck — the largest of that sequence.
Aftershocks so far
| Time (Puerto Rico time) | Magnitude (USGS preliminary magnitude) | Location |
|---|---|---|
| 5:41 PM | 2.3 | 3 km SW of Guánica |
| 4:17 PM | 2.3 | 4 km WSW of Fuig |
| 3:47 PM | 2.3 | 0 km SW of Indios |
| 3:40 PM | 2.4 | 4 km WSW of Fuig |
| 3:28 PM | 3.0 | 4 km WSW of Guánica |
| 3:24 PM | 2.7 | 4 km WSW of Fuig |
| 3:14 PM | 2.1 | 6 km SW of Guánica |
| 2:42 PM | 2.2 | 6 km SW of Guánica |
| 2:23 PM | 2.8 | 4 km WSW of Guánica |
| 2:11 PM | 2.1 | 6 km WSW of Fuig |
Nearest towns
| Town | Distance (Great-circle distance from the epicentre, rounded) |
|---|---|
| Guánica | 5 km |
| Cabo Rojo | 27 km |
| Mayagüez | 36 km |
Live seismic activity near Puerto Rico is on the island dashboard. USGS’s record of this event, including revisions, is at https://earthquake.usgs.gov/earthquakes/eventpage/pr2026261000.
This is the first Quake Watch. Source: U.S. Geological Survey event pr2026261000, read 8.7 hours after the event by 787daily; magnitude, depth and felt counts are revised as more data arrives.