QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

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

· 22 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Vieques Municipio 42 kmCulebra Municipio 43 kmCeiba Municipio 66 kmFajardo Municipio 70 kmNaguabo Municipio 76 kmHumacao Municipio 79 kmLuquillo Municipio 80 kmYabucoa Municipio 87 kmRío Grande Municipio 88 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 1.8 (md)
Depth
22 km below the surface
Felt
no reports yet
Nearest
Vieques Municipio, 42 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3340 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 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 730,000× the energy of this one
  3. Around the size people start to feel M 3.0 65× the energy of this one
  4. This earthquake M 1.8 about 15 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 18.0370, -65.0418. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Vieques Municipio, PR 42 km (26 mi) ESE of here earthquakes near Vieques Municipio
Culebra Municipio, PR 43 km (27 mi) SE of here earthquakes near Culebra Municipio
Ceiba Municipio, PR 66 km (41 mi) ESE of here earthquakes near Ceiba Municipio
Fajardo Municipio, PR 70 km (43 mi) SE of here earthquakes near Fajardo Municipio
Naguabo Municipio, PR 76 km (47 mi) ESE of here earthquakes near Naguabo Municipio
Humacao Municipio, PR 79 km (49 mi) E of here earthquakes near Humacao 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. 3.4 2 km ENE of Cruz Bay, U.S. Virgin Islands
  2. 2.5 4 km SSE of Cruz Bay, U.S. Virgin Islands
  3. 2.5 21 km W of Saint Croix, U.S. Virgin Islands
  4. 2.8 26 km S of Charlotte Amalie, U.S. Virgin Islands
  5. 2.5 29 km S of Charlotte Amalie, U.S. Virgin Islands
  6. 2.9 36 km ESE of Isabel Segunda, Puerto Rico
  7. 2.5 8 km NNW of Isabel Segunda, Puerto Rico
  8. 2.9 6 km S of Esperanza, Puerto Rico
  9. 2.5 12 km N of Charlotte Amalie, U.S. Virgin Islands
  10. 2.9 23 km S of Esperanza, Puerto Rico
  11. 2.8 31 km SSW of Charlotte Amalie, U.S. Virgin Islands
  12. 3.0 22 km S of Charlotte Amalie, U.S. Virgin Islands
  13. 3.4 17 km S of Cruz Bay, U.S. Virgin Islands
  14. 2.9 8 km SE of Culebra, Puerto Rico
  15. 3.1 36 km NW of Saint Croix, 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.