Earthquakes in Puerto Rico — June 2025

265 earthquakes were recorded in Puerto Rico during June 2025, an average of 8.8 per day.

2 reached magnitude 4 or above and 0 reached magnitude 5 or above. The average focal depth was 21 km.

The month's largest event in Puerto Rico was a magnitude 4.3 earthquake near San Juan, Puerto Rico on 07 June 2025 at 05:28 UTC. A magnitude 4.3 earthquake radiates roughly 43 tons of TNT equivalent in seismic energy.

That is well above the Puerto Rico monthly average of 173 events over the period we cover — an unusually active month, and up from the 200 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 17 in the magnitude 1 range, 177 in the magnitude 2 range, 69 in the magnitude 3 range, 2 in the magnitude 4 range.

Activity peaked on 24 June, when 24 events were recorded.

The month's largest events were M4.3 near San Juan, Puerto Rico on 07 June at 35 km; M4.2 near Carrizales, Puerto Rico on 30 June at 51 km; M4.0 near Arecibo, Puerto Rico on 30 June at 40 km.

That is 53% above the 173 events Puerto Rico averages per month across the 21 months on record.