QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5Md

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

· 9.0 km deep · released about 5.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Culebra Municipio 54 kmVieques Municipio 76 kmFajardo Municipio 80 kmCeiba Municipio 87 kmLuquillo Municipio 93 kmNaguabo Municipio 100 kmRío Grande Municipio 102 kmHumacao Municipio 109 kmCanóvanas Municipio 112 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 1.5 (Md)
Depth
9.0 km below the surface
Felt
no reports yet
Nearest
Culebra Municipio, 54 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3454 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 18.5224, -64.8425. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Culebra Municipio, PR 54 km (33 mi) ENE of here earthquakes near Culebra Municipio
Vieques Municipio, PR 76 km (47 mi) NE of here earthquakes near Vieques Municipio
Fajardo Municipio, PR 80 km (50 mi) E of here earthquakes near Fajardo Municipio
Ceiba Municipio, PR 87 km (54 mi) ENE of here earthquakes near Ceiba Municipio
Luquillo Municipio, PR 93 km (58 mi) E of here earthquakes near Luquillo Municipio
Naguabo Municipio, PR 100 km (62 mi) ENE of here earthquakes near Naguabo Municipio

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

Aftershocks so far

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

  1. 1.8 22 km NNW of Charlotte Amalie, U.S. Virgin Islands
  2. 1.9 23 km SSW of Charlotte Amalie, U.S. Virgin Islands
  3. 1.9 69 km N of Charlotte Amalie, U.S. Virgin Islands
  4. 2.1 60 km N of Charlotte Amalie, U.S. Virgin Islands
  5. 2.0 24 km NNE of Cruz Bay, U.S. Virgin Islands
  6. 1.8 61 km N of Charlotte Amalie, U.S. Virgin Islands
  7. 2.3 10 km NNW of Cruz Bay, U.S. Virgin Islands
  8. 2.7 57 km N of Cruz Bay, U.S. Virgin Islands
  9. 2.3 34 km NNE of Culebra, Puerto Rico
  10. 1.8 25 km NNW of Charlotte Amalie, U.S. Virgin Islands
  11. 3.4 63 km N of Charlotte Amalie, U.S. Virgin Islands
  12. 2.0 47 km NNW of Charlotte Amalie, U.S. Virgin Islands
  13. 2.7 36 km NNW of Charlotte Amalie, U.S. Virgin Islands
  14. 2.0 56 km NNE of Cruz Bay, U.S. Virgin Islands
  15. 3.2 49 km NNW 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.