Earthquakes in Puerto Rico — November 2025

91 earthquakes were recorded in Puerto Rico during November 2025, an average of 3.0 per day.

0 reached magnitude 4 or above and 0 reached magnitude 5 or above. The average focal depth was 24 km.

The month's largest event in Puerto Rico was a magnitude 3.7 earthquake near Culebra, Puerto Rico on 15 November 2025 at 05:11 UTC. A magnitude 3.7 earthquake radiates roughly 5.2 tons of TNT equivalent in seismic energy.

That is below the Puerto Rico monthly average of 173 events over the period we cover — a comparatively quiet month, and down from the 131 recorded the previous month.

95% of events here are shallow (under 70 km), 5% 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 5 in the magnitude 1 range, 65 in the magnitude 2 range, 21 in the magnitude 3 range.

Activity peaked on 30 November, when 8 events were recorded.

The month's largest events were M3.7 near Culebra, Puerto Rico on 15 November at 101 km; M3.6 near Isabela, Puerto Rico on 24 November at 55 km; M3.4 near San Juan, Puerto Rico on 24 November at 22 km.

That is 47% below the 173 events Puerto Rico averages per month across the 21 months on record.