QuakeIndex

Earthquake · reviewed by a seismologist

M 3.7Md

11 km SE of Cruz Bay, U.S. Virgin Islands

· 128 km deep · released about 5.4 tons of TNT

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10 km30 km60 km120 km N Culebra Municipio 63 kmVieques Municipio 78 kmFajardo Municipio 94 kmCeiba Municipio 96 kmLuquillo Municipio 106 kmNaguabo Municipio 109 kmHumacao Municipio 115 kmRío Grande Municipio 116 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 3.7 (Md)
Depth
128 km below the surface
Felt
no reports yet
Nearest
Culebra Municipio, 63 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3686 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 5.4 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.7 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 32,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 1,400× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,000× the energy of this one
  4. This earthquake M 3.7 about 5.4 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 11× more

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 18.2714, -64.7096. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Culebra Municipio, PR 63 km (39 mi) E of here earthquakes near Culebra Municipio
Vieques Municipio, PR 78 km (49 mi) ENE of here earthquakes near Vieques Municipio
Fajardo Municipio, PR 94 km (58 mi) E of here earthquakes near Fajardo Municipio
Ceiba Municipio, PR 96 km (60 mi) E of here earthquakes near Ceiba Municipio
Luquillo Municipio, PR 106 km (66 mi) E of here earthquakes near Luquillo Municipio
Naguabo Municipio, PR 109 km (67 mi) E of here earthquakes near Naguabo Municipio

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

Aftershocks so far

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

  1. 1.5 Virgin Islands
  2. 2.1 37 km NNE of Cruz Bay, U.S. Virgin Islands
  3. 2.2 22 km ENE of Cruz Bay, U.S. Virgin Islands
  4. 2.2 9 km WNW of Charlotte Amalie, U.S. Virgin Islands
  5. 3.0 32 km N of Cruz Bay, U.S. Virgin Islands
  6. 1.5 22 km E of Cruz Bay, U.S. Virgin Islands
  7. 2.6 22 km NNE of Cruz Bay, U.S. Virgin Islands
  8. 1.7 7 km SSW of Charlotte Amalie, U.S. Virgin Islands
  9. 1.9 23 km NE of Cruz Bay, U.S. Virgin Islands
  10. 2.2 15 km N of Saint Croix, U.S. Virgin Islands
  11. 2.5 16 km S of Cruz Bay, U.S. Virgin Islands
  12. 2.3 14 km N of Saint Croix, U.S. Virgin Islands
  13. 2.5 40 km NNE of Cruz Bay, U.S. Virgin Islands
  14. 1.8 21 km N of Cruz Bay, U.S. Virgin Islands
  15. 2.2 23 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.