QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

27 km SSE of Cruz Bay, U.S. Virgin Islands

· 11 km deep · released about 780 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Culebra Municipio 71 kmVieques Municipio 80 kmCeiba Municipio 101 kmFajardo Municipio 101 kmNaguabo Municipio 112 kmLuquillo Municipio 113 kmHumacao Municipio 117 km
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
Magnitude
M 2.9 (md)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Culebra Municipio, 71 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3360 days ago

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

How big was it?

This earthquake released about 780 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 19,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 14,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.2× the energy of this one
  4. This earthquake M 2.9 about 780 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.

Where

Epicentre 18.1108, -64.6768. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Culebra Municipio, PR 71 km (44 mi) ESE of here earthquakes near Culebra Municipio
Vieques Municipio, PR 80 km (50 mi) E of here earthquakes near Vieques Municipio
Ceiba Municipio, PR 101 km (63 mi) E of here earthquakes near Ceiba Municipio
Fajardo Municipio, PR 101 km (63 mi) ESE of here earthquakes near Fajardo Municipio
Naguabo Municipio, PR 112 km (70 mi) E of here earthquakes near Naguabo Municipio
Luquillo Municipio, PR 113 km (70 mi) ESE of here earthquakes near Luquillo Municipio

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

Aftershocks so far

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

  1. 2.8 31 km SSW of Charlotte Amalie, U.S. Virgin Islands
  2. 3.2 35 km E of Cruz Bay, U.S. Virgin Islands
  3. 3.0 22 km S of Charlotte Amalie, U.S. Virgin Islands
  4. 3.1 37 km ENE of Cruz Bay, U.S. Virgin Islands
  5. 3.4 17 km S of Cruz Bay, U.S. Virgin Islands
  6. 3.0 16 km NE of Cruz Bay, U.S. Virgin Islands
  7. 3.4 37 km E of Saint Croix, U.S. Virgin Islands
  8. 3.1 36 km NW of Saint Croix, U.S. Virgin Islands
  9. 3.2 7 km WSW of Charlotte Amalie, U.S. Virgin Islands
  10. 3.1 21 km E of Cruz Bay, U.S. Virgin Islands
  11. 2.4 14 km SSE of Cruz Bay, U.S. Virgin Islands
  12. 3.4 23 km NNE of Cruz Bay, U.S. Virgin Islands
  13. 3.2 10 km NNE of Charlotte Amalie, U.S. Virgin Islands
  14. 3.3 12 km S of Charlotte Amalie, U.S. Virgin Islands
  15. 2.9 18 km NNE of Cruz Bay, U.S. Virgin Islands

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

On USGS

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