QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

31 km SSW of Charlotte Amalie, U.S. Virgin Islands

· 132 km deep · released about 420 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Culebra Municipio 38 kmVieques Municipio 40 kmCeiba Municipio 63 kmFajardo Municipio 66 kmNaguabo Municipio 73 kmLuquillo Municipio 76 kmHumacao Municipio 77 kmRío Grande Municipio 85 kmYabucoa Municipio 85 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 2.8 (md)
Depth
132 km below the surface
Felt
no reports yet
Nearest
Culebra Municipio, 38 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2930 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 420 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 36,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 26,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.3× the energy of this one
  4. This earthquake M 2.8 about 420 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 18.0830, -65.0565. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Culebra Municipio, PR 38 km (24 mi) SE of here earthquakes near Culebra Municipio
Vieques Municipio, PR 40 km (25 mi) E of here earthquakes near Vieques Municipio
Ceiba Municipio, PR 63 km (39 mi) ESE of here earthquakes near Ceiba Municipio
Fajardo Municipio, PR 66 km (41 mi) ESE of here earthquakes near Fajardo Municipio
Naguabo Municipio, PR 73 km (45 mi) E of here earthquakes near Naguabo Municipio
Luquillo Municipio, PR 76 km (47 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

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

  1. 2.5 17 km NW of Charlotte Amalie, U.S. Virgin Islands
  2. 2.2 16 km S of Esperanza, Puerto Rico
  3. 2.4 30 km SSE of Esperanza, Puerto Rico
  4. 2.3 10 km WNW of Culebra, Puerto Rico
  5. 3.1 8 km W of Charlotte Amalie, U.S. Virgin Islands
  6. 3.0 36 km SE of Esperanza, Puerto Rico
  7. 2.3 21 km SE of Isabel Segunda, Puerto Rico
  8. 3.1 12 km E of Culebra, Puerto Rico
  9. 3.0 10 km WNW of Charlotte Amalie, U.S. Virgin Islands
  10. 1.8 23 km SSE of Esperanza, Puerto Rico
  11. 2.9 31 km SSW of Charlotte Amalie, U.S. Virgin Islands
  12. 2.6 17 km SE of Esperanza, Puerto Rico
  13. 3.0 12 km S of Esperanza, Puerto Rico
  14. 2.7 21 km SE of Esperanza, Puerto Rico
  15. 2.1 36 km SSE of Esperanza, Puerto Rico

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.