QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

35 km S of Charlotte Amalie, U.S. Virgin Islands

· 32 km deep · released about 38 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Culebra Municipio 48 kmVieques Municipio 49 kmCeiba Municipio 72 kmFajardo Municipio 76 kmNaguabo Municipio 82 kmLuquillo Municipio 86 kmHumacao Municipio 86 kmYabucoa Municipio 93 kmRío Grande Municipio 95 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 2.1 (md)
Depth
32 km below the surface
Felt
no reports yet
Nearest
Culebra Municipio, 48 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3338 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 38 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 390,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 280,000× the energy of this one
  3. Around the size people start to feel M 3.0 25× the energy of this one
  4. This earthquake M 2.1 about 38 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 18.0263, -64.9808. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Culebra Municipio, PR 48 km (30 mi) SE of here earthquakes near Culebra Municipio
Vieques Municipio, PR 49 km (30 mi) ESE of here earthquakes near Vieques Municipio
Ceiba Municipio, PR 72 km (45 mi) ESE of here earthquakes near Ceiba Municipio
Fajardo Municipio, PR 76 km (47 mi) ESE of here earthquakes near Fajardo Municipio
Naguabo Municipio, PR 82 km (51 mi) ESE of here earthquakes near Naguabo Municipio
Luquillo Municipio, PR 86 km (53 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

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

  1. 2.3 18 km SSW of Cruz Bay, U.S. Virgin Islands
  2. 1.9 17 km SE of Esperanza, Puerto Rico
  3. 2.9 41 km ESE of Esperanza, Puerto Rico
  4. 2.3 39 km ESE of Esperanza, Puerto Rico
  5. 3.4 2 km ENE of Cruz Bay, U.S. Virgin Islands
  6. 2.5 4 km SSE of Cruz Bay, U.S. Virgin Islands
  7. 2.5 21 km W of Saint Croix, U.S. Virgin Islands
  8. 2.8 26 km S of Charlotte Amalie, U.S. Virgin Islands
  9. 2.5 29 km S of Charlotte Amalie, U.S. Virgin Islands
  10. 2.9 36 km ESE of Isabel Segunda, Puerto Rico
  11. 2.5 12 km N of Charlotte Amalie, U.S. Virgin Islands
  12. 2.8 31 km SSW of Charlotte Amalie, U.S. Virgin Islands
  13. 3.0 22 km S of Charlotte Amalie, U.S. Virgin Islands
  14. 3.4 17 km S of Cruz Bay, U.S. Virgin Islands
  15. 2.9 8 km SE of Culebra, 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.