Earthquakes in Puerto Rico — January 2025

160 earthquakes were recorded in Puerto Rico during January 2025, an average of 5.2 per day.

0 reached magnitude 4 or above and 0 reached magnitude 5 or above. The average focal depth was 20 km.

The month's largest event in Puerto Rico was a magnitude 3.9 earthquake near Suárez, Puerto Rico on 15 January 2025 at 05:56 UTC. A magnitude 3.9 earthquake radiates roughly 11 tons of TNT equivalent in seismic energy.

That is close to the Puerto Rico monthly average of 171 events over the period we cover, and up from the 120 recorded the previous month.

96% of events here are shallow (under 70 km), 4% 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 21 in the magnitude 1 range, 98 in the magnitude 2 range, 41 in the magnitude 3 range.

Activity peaked on 08 January, when 10 events were recorded.

The month's largest events were M3.9 near Suárez, Puerto Rico on 15 January at 84 km; M3.6 near Culebra, Puerto Rico on 31 January at 27 km; M3.6 near San Antonio, Puerto Rico on 20 January at 8 km.

That is close to the 171 events Puerto Rico averages per month across the 22 months on record.