QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8Md

78 km NE of Cruz Bay, U.S. Virgin Islands

· 21 km deep · released about 480 lb of TNT

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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 2.8 (Md)
Depth
21 km below the surface
Felt
no reports yet
Nearest
Culebra Municipio, 122 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3604 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 480 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 32,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 2× the energy of this one
  4. This earthquake M 2.8 about 480 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 18.8572, -64.2940. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Culebra Municipio, PR 122 km (76 mi) ENE of here earthquakes near Culebra Municipio
Vieques Municipio, PR 145 km (90 mi) NE of here earthquakes near Vieques Municipio

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

Aftershocks so far

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

  1. 1.5 48 km NNE of Cruz Bay, U.S. Virgin Islands
  2. 3.2 89 km N of Cruz Bay, U.S. Virgin Islands
  3. 1.9 62 km N of Cruz Bay, U.S. Virgin Islands
  4. 3.3 91 km N of Cruz Bay, U.S. Virgin Islands
  5. 2.7 Virgin Islands
  6. 2.2 74 km NE of Cruz Bay, U.S. Virgin Islands
  7. 2.4 66 km NE of Cruz Bay, U.S. Virgin Islands
  8. 2.2 76 km NE of Cruz Bay, U.S. Virgin Islands
  9. 2.2 88 km NE of Cruz Bay, U.S. Virgin Islands
  10. 2.0 41 km NNE of Cruz Bay, U.S. Virgin Islands
  11. 1.9 90 km NNE of Cruz Bay, U.S. Virgin Islands
  12. 2.0 72 km ENE of Cruz Bay, U.S. Virgin Islands
  13. 2.0 70 km NE of Cruz Bay, U.S. Virgin Islands
  14. 2.6 77 km NE of Cruz Bay, U.S. Virgin Islands
  15. 2.7 78 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.

On USGS

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