QuakeIndex

Earthquake · reviewed by a seismologist

M 4.0md

12 km S of Cruz Bay, U.S. Virgin Islands

· 116 km deep · released about 15 tons of TNT

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10 km30 km60 km120 km N Culebra Municipio 58 kmVieques Municipio 71 kmFajardo Municipio 88 kmCeiba Municipio 90 kmLuquillo Municipio 100 kmNaguabo Municipio 102 kmHumacao Municipio 108 kmRío Grande Municipio 110 kmLas Piedras 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 4.0 (md)
Depth
116 km below the surface
Felt
no reports yet
Nearest
Culebra Municipio, 58 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 997 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon.

How big was it?

This earthquake released about 15 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 11,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 500× the energy of this one
  3. Magna, Utah 2020 M 5.7 350× the energy of this one
  4. This earthquake M 4.0 about 15 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 32× 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 18.2245, -64.7723. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Culebra Municipio, PR 58 km (36 mi) ESE of here earthquakes near Culebra Municipio
Vieques Municipio, PR 71 km (44 mi) E of here earthquakes near Vieques Municipio
Fajardo Municipio, PR 88 km (55 mi) ESE of here earthquakes near Fajardo Municipio
Ceiba Municipio, PR 90 km (56 mi) E of here earthquakes near Ceiba Municipio
Luquillo Municipio, PR 100 km (62 mi) E of here earthquakes near Luquillo Municipio
Naguabo Municipio, PR 102 km (63 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

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

  1. 3.2 13 km ESE of Cruz Bay, U.S. Virgin Islands
  2. 3.4 28 km NNE of Cruz Bay, U.S. Virgin Islands
  3. 3.0 24 km ENE of Cruz Bay, U.S. Virgin Islands
  4. 3.6 27 km N of Charlotte Amalie, U.S. Virgin Islands
  5. 3.4 8 km NNE of Cruz Bay, U.S. Virgin Islands
  6. 2.6 32 km N of Charlotte Amalie, U.S. Virgin Islands
  7. 3.1 37 km NNE of Cruz Bay, U.S. Virgin Islands
  8. 2.7 27 km S of Charlotte Amalie, U.S. Virgin Islands
  9. 3.4 22 km SSW of Cruz Bay, U.S. Virgin Islands
  10. 3.4 15 km ESE of Cruz Bay, U.S. Virgin Islands
  11. 3.4 31 km N of Charlotte Amalie, U.S. Virgin Islands
  12. 2.9 19 km ENE of Cruz Bay, U.S. Virgin Islands
  13. 2.9 26 km NNW of Charlotte Amalie, U.S. Virgin Islands
  14. 3.1 23 km SE of Culebra, Puerto Rico
  15. 3.3 19 km NE 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.4 on 2022-09-03 — it released about 4.4 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

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