Earthquakes in the U.S. Virgin Islands — March 2026

69 earthquakes were recorded in the U.S. Virgin Islands during March 2026, an average of 2.2 per day.

3 reached magnitude 4 or above and 0 reached magnitude 5 or above. The average focal depth was 32 km.

The month's largest event in the U.S. Virgin Islands was a magnitude 4.9 earthquake near Charlotte Amalie, U.S. Virgin Islands on 31 March 2026 at 21:15 UTC. A magnitude 4.9 earthquake radiates roughly 338 tons of TNT equivalent in seismic energy.

That is well above the the U.S. Virgin Islands monthly average of 39 events over the period we cover — an unusually active month, and down from the 87 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 15 in the magnitude 2 range, 51 in the magnitude 3 range, 3 in the magnitude 4 range.

Activity peaked on 31 March, when 32 events were recorded.

The month's largest events were M4.9 near Charlotte Amalie, U.S. Virgin Islands on 31 March at 20 km; M4.9 near Charlotte Amalie, U.S. Virgin Islands on 31 March at 20 km; M4.3 near Charlotte Amalie, U.S. Virgin Islands on 31 March at 29 km.

That is 75% above the 39 events the U.S. Virgin Islands averages per month across the 21 months on record.