QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

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

· 23 km deep · released about 17 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Culebra Municipio 49 kmVieques Municipio 52 kmCeiba Municipio 74 kmFajardo Municipio 77 kmNaguabo Municipio 85 kmLuquillo Municipio 88 kmHumacao Municipio 89 kmYabucoa Municipio 96 kmRío Grande Municipio 97 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
23 km below the surface
Felt
no reports yet
Nearest
Culebra Municipio, 49 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3420 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 17 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 5.8 870,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 620,000× the energy of this one
  3. Around the size people start to feel M 3.0 55× the energy of this one
  4. This earthquake M 1.8 about 17 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 18.0510, -64.9508. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Culebra Municipio, PR 49 km (30 mi) SE of here earthquakes near Culebra Municipio
Vieques Municipio, PR 52 km (32 mi) E of here earthquakes near Vieques Municipio
Ceiba Municipio, PR 74 km (46 mi) ESE of here earthquakes near Ceiba Municipio
Fajardo Municipio, PR 77 km (48 mi) ESE of here earthquakes near Fajardo Municipio
Naguabo Municipio, PR 85 km (53 mi) ESE of here earthquakes near Naguabo Municipio
Luquillo Municipio, PR 88 km (54 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

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

  1. 1.8 7 km SE of Culebra, Puerto Rico
  2. 1.8 6 km NE of Charlotte Amalie, U.S. Virgin Islands
  3. 2.4 10 km SE of Esperanza, Puerto Rico
  4. 2.8 15 km SSE of Esperanza, Puerto Rico
  5. 2.1 35 km S of Charlotte Amalie, U.S. Virgin Islands
  6. 2.9 16 km SSE of Esperanza, Puerto Rico
  7. 1.8 35 km SSW of Charlotte Amalie, U.S. Virgin Islands
  8. 2.2 15 km SE of Esperanza, Puerto Rico
  9. 2.8 29 km S of Charlotte Amalie, U.S. Virgin Islands
  10. 3.0 16 km SSE of Esperanza, Puerto Rico
  11. 2.7 16 km SSE of Esperanza, Puerto Rico
  12. 1.9 20 km NW of Charlotte Amalie, U.S. Virgin Islands
  13. 2.2 34 km SE of Esperanza, Puerto Rico
  14. 2.5 17 km ESE of Esperanza, Puerto Rico
  15. 1.9 26 km S of Charlotte Amalie, 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.