20 km SSW of Cruz Bay, U.S. Virgin Islands

Yes. A magnitude 2.5 earthquake was recorded 20 km SSW of Cruz Bay, U.S. Virgin Islands, at 4:02 am AST on 18 August 2026 (08:02 UTC), 16 km deep.

2026-08-18 08:02 UTC · 16 km deep · released about 190 lb of TNT

Felt it? Tell USGS Check my area

Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.

When: 2026-08-18 08:02 UTC
Magnitude: M 2.5 (md)
Depth: 16 km below the surface
Felt: no reports yet
Nearest: Culebra Municipio, 54 km WNW
Status: Reviewed by a seismologist

USGS · last changed by USGS 85 days ago · we first saw it 85 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 16 km (10 mi) from the epicentre. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

How big was it?

This earthquake released about 190 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

Mineral, Virginia 2011 M 5.8 80,000× the energy of this one
Magna, Utah 2020 M 5.7 57,000× the energy of this one
Around the size people start to feel M 3.0 5.1× the energy of this one
This earthquake M 2.5 about 190 lb of TNT

Energy from the Gutenberg–Richter relation (log₁₀E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

For this area

The largest earthquake within 50 km since 2016 was M 4.4 on 2022-09-03 — about 710 times the energy of this one.

Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:

6.1 22 km NNE of Saint Croix, U.S. Virgin Islands · 35 km SE of this epicentre Jul 8, 1970
5.0 29 km S of Cruz Bay, U.S. Virgin Islands · 12 km SE of this epicentre Jan 9, 1990

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Map loads when it scrolls into view

Nearby places

Place	Distance	Direction from the epicentre
Culebra Municipio, PR	54 km (33 mi)	WNW	earthquakes near Culebra Municipio
Vieques Municipio, PR	63 km (39 mi)	W	earthquakes near Vieques Municipio
Ceiba Municipio, PR	84 km (52 mi)	W	earthquakes near Ceiba Municipio
Fajardo Municipio, PR	84 km (52 mi)	WNW	earthquakes near Fajardo Municipio
Naguabo Municipio, PR	95 km (59 mi)	W	earthquakes near Naguabo Municipio
Luquillo Municipio, PR	96 km (59 mi)	WNW	earthquakes near Luquillo Municipio

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

11 earthquakes have been recorded within 50 km since this one.

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 14:51 UTC. QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

The official USGS event page — the source of record for every value above
Did you feel it? Report it to USGS — reports go to USGS, not to us
ShakeMap for this event, when USGS has produced one

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.