QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

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

· 73 km deep · released about 650 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Culebra Municipio 49 kmVieques Municipio 59 kmCeiba Municipio 79 kmFajardo Municipio 79 kmNaguabo Municipio 91 kmLuquillo Municipio 91 kmHumacao Municipio 96 kmRío Grande Municipio 100 kmYabucoa Municipio 104 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
73 km below the surface
Felt
no reports yet
Nearest
Culebra Municipio, 49 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3057 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 650 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 23,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 16,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.5× the energy of this one
  4. This earthquake M 2.9 about 650 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 18.1513, -64.8776. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Culebra Municipio, PR 49 km (31 mi) ESE of here earthquakes near Culebra Municipio
Vieques Municipio, PR 59 km (36 mi) E of here earthquakes near Vieques Municipio
Ceiba Municipio, PR 79 km (49 mi) E of here earthquakes near Ceiba Municipio
Fajardo Municipio, PR 79 km (49 mi) ESE of here earthquakes near Fajardo Municipio
Naguabo Municipio, PR 91 km (56 mi) E of here earthquakes near Naguabo Municipio
Luquillo Municipio, PR 91 km (57 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

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

  1. 2.9 18 km ENE of Cruz Bay, U.S. Virgin Islands
  2. 3.1 29 km ESE of Esperanza, Puerto Rico
  3. 2.9 28 km SSE of Cruz Bay, U.S. Virgin Islands
  4. 3.0 28 km N of Charlotte Amalie, U.S. Virgin Islands
  5. 2.7 11 km WNW of Charlotte Amalie, U.S. Virgin Islands
  6. 2.2 26 km S of Charlotte Amalie, U.S. Virgin Islands
  7. 2.3 18 km SSW of Cruz Bay, U.S. Virgin Islands
  8. 2.6 17 km N of Charlotte Amalie, U.S. Virgin Islands
  9. 2.9 41 km ESE of Esperanza, Puerto Rico
  10. 2.2 19 km NW of Charlotte Amalie, U.S. Virgin Islands
  11. 2.3 39 km ESE of Esperanza, Puerto Rico
  12. 3.4 2 km ENE of Cruz Bay, U.S. Virgin Islands
  13. 2.5 4 km SSE of Cruz Bay, U.S. Virgin Islands
  14. 2.5 21 km W of Saint Croix, U.S. Virgin Islands
  15. 2.8 26 km S of Charlotte Amalie, 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.