Earthquakes in the U.S. Virgin Islands — August 2025
17 earthquakes were recorded in the U.S. Virgin Islands during August 2025, an average of 0.5 per day.
1 reached magnitude 4 or above and 0 reached magnitude 5 or above. The average focal depth was 43 km.
The month's largest event in the U.S. Virgin Islands was a magnitude 4.1 earthquake near Cruz Bay, U.S. Virgin Islands on 31 August 2025 at 23:38 UTC. A magnitude 4.1 earthquake radiates roughly 24 tons of TNT equivalent in seismic energy.
That is below the the U.S. Virgin Islands monthly average of 39 events over the period we cover — a comparatively quiet month, and down from the 21 recorded the previous month.
88% of events here are shallow (under 70 km), 12% intermediate (70–300 km) and 0% deep-focus (over 300 km). The mix is dominated by shallow crustal events, with a minority of intermediate-depth activity.
By band, the catalogue holds 2 in the magnitude 2 range, 14 in the magnitude 3 range, 1 in the magnitude 4 range.
Activity peaked on 31 August, when 6 events were recorded.
The month's largest events were M4.1 near Cruz Bay, U.S. Virgin Islands on 31 August at 63 km; M3.9 near Cruz Bay, U.S. Virgin Islands on 31 August at 60 km; M3.8 near Cruz Bay, U.S. Virgin Islands on 30 August at 69 km.
That is 57% below the 39 events the U.S. Virgin Islands averages per month across the 21 months on record.
Largest earthquakes in the U.S. Virgin Islands, August 2025
17 events listed below, newest first. Times are UTC. Click any column header to re-sort.
Frequently asked questions
How many earthquakes hit the U.S. Virgin Islands in August 2025?
17 earthquakes were recorded in the U.S. Virgin Islands during August 2025, of which 1 were magnitude 4 or above.
What was the biggest earthquake in the U.S. Virgin Islands in August 2025?
A magnitude 4.1 event near Cruz Bay, U.S. Virgin Islands on 31 August 2025.
Other months in the U.S. Virgin Islands
Magnitudes for August 2025 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.