QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

53 km N of Charlotte Amalie, U.S. Virgin Islands

· 16 km deep · released about 780 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Culebra Municipio 65 kmFajardo Municipio 80 kmVieques Municipio 91 kmLuquillo Municipio 92 kmCeiba Municipio 93 kmRío Grande Municipio 100 kmNaguabo Municipio 105 kmLoíza Municipio 110 kmCanóvanas Municipio 110 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 2.9 (md)
Depth
16 km below the surface
Felt
no reports yet
Nearest
Culebra Municipio, 65 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2488 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 780 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 19,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 14,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.2× the energy of this one
  4. This earthquake M 2.9 about 780 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 18.8226, -64.9800. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Culebra Municipio, PR 65 km (40 mi) NNE of here earthquakes near Culebra Municipio
Fajardo Municipio, PR 80 km (50 mi) NE of here earthquakes near Fajardo Municipio
Vieques Municipio, PR 91 km (57 mi) NNE of here earthquakes near Vieques Municipio
Luquillo Municipio, PR 92 km (57 mi) ENE of here earthquakes near Luquillo Municipio
Ceiba Municipio, PR 93 km (58 mi) NE of here earthquakes near Ceiba Municipio
Río Grande Municipio, PR 100 km (62 mi) ENE of here earthquakes near Río Grande 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. 3.2 Puerto Rico region
  2. 2.6 21 km N of Charlotte Amalie, U.S. Virgin Islands
  3. 3.3 80 km N of Cruz Bay, U.S. Virgin Islands
  4. 3.4 84 km N of Charlotte Amalie, U.S. Virgin Islands
  5. 3.1 62 km N of Charlotte Amalie, U.S. Virgin Islands
  6. 2.2 62 km N of Culebra, Puerto Rico
  7. 2.5 66 km N of Culebra, Puerto Rico
  8. 2.4 52 km N of Culebra, Puerto Rico
  9. 2.9 86 km NNW of Charlotte Amalie, U.S. Virgin Islands
  10. 3.0 88 km NNW of Charlotte Amalie, U.S. Virgin Islands
  11. 2.6 74 km NNE of Luquillo, Puerto Rico
  12. 3.1 84 km N of Culebra, Puerto Rico
  13. 3.1 81 km N of Culebra, Puerto Rico
  14. 2.8 65 km NNW of Charlotte Amalie, U.S. Virgin Islands
  15. 2.6 43 km NNW 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.7 on 2018-04-06 — it released about 440 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

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