Earthquakes in Puerto Rico — September 2026
1 earthquakes were recorded in Puerto Rico during September 2026, an average of 0.0 per day.
0 reached magnitude 4 or above and 0 reached magnitude 5 or above. The average focal depth was 12 km.
The month's largest event in Puerto Rico was a magnitude 2.5 earthquake near Magas Arriba, Puerto Rico on 01 September 2026 at 04:53 UTC. A magnitude 2.5 earthquake radiates roughly 74 kg of TNT equivalent in seismic energy.
That is below the Puerto Rico monthly average of 167 events over the period we cover — a comparatively quiet month, and down from the 158 recorded the previous month.
100% of events here are shallow (under 70 km), 0% intermediate (70–300 km) and 0% deep-focus (over 300 km). Almost everything here is crustal. That is characteristic of transform faulting or continental deformation rather than subduction — and it means shaking at the surface is strong for the magnitudes involved.
By band, the catalogue holds 1 in the magnitude 2 range.
That is 99% below the 167 events Puerto Rico averages per month across the 22 months on record.
Largest earthquakes in Puerto Rico, September 2026
1 event listed below, newest first. Times are UTC. Click any column header to re-sort.
| Time (UTC) | Mag | Location | Depth (km) | Country | Details |
|---|---|---|---|---|---|
| 2.5 | Magas Arriba, Puerto Rico | 12.0 | Puerto Rico | View details View |
Frequently asked questions
How many earthquakes hit Puerto Rico in September 2026?
1 earthquakes were recorded in Puerto Rico during September 2026, of which 0 were magnitude 4 or above.
What was the biggest earthquake in Puerto Rico in September 2026?
A magnitude 2.5 event near Magas Arriba, Puerto Rico on 01 September 2026.
Other months in Puerto Rico
Magnitudes for September 2026 reflect the current USGS review status and may have been revised since first publication. See our guides on the magnitude scale, focal depth and why earthquakes cluster.