QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

37 km NNE of Culebra, Puerto Rico

· 58 km deep · released about 570 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Culebra Municipio 35 kmFajardo Municipio 47 kmLuquillo Municipio 58 kmCeiba Municipio 59 kmVieques Municipio 60 kmRío Grande Municipio 66 kmNaguabo Municipio 71 kmCanóvanas Municipio 77 kmLoíza Municipio 78 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
58 km below the surface
Felt
no reports yet
Nearest
Culebra Municipio, 35 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2861 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 570 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 27,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 19,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.7× the energy of this one
  4. This earthquake M 2.9 about 570 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 18.6321, -65.2305. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Culebra Municipio, PR 35 km (22 mi) NNE of here earthquakes near Culebra Municipio
Fajardo Municipio, PR 47 km (29 mi) NE of here earthquakes near Fajardo Municipio
Luquillo Municipio, PR 58 km (36 mi) ENE of here earthquakes near Luquillo Municipio
Ceiba Municipio, PR 59 km (37 mi) NE of here earthquakes near Ceiba Municipio
Vieques Municipio, PR 60 km (37 mi) NNE of here earthquakes near Vieques Municipio
Río Grande Municipio, PR 66 km (41 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

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

  1. 2.6 17 km N of Charlotte Amalie, U.S. Virgin Islands
  2. 3.1 54 km NNE of Culebra, Puerto Rico
  3. 2.5 42 km N of Charlotte Amalie, U.S. Virgin Islands
  4. 2.2 74 km NNW of Charlotte Amalie, U.S. Virgin Islands
  5. 2.8 23 km NNE of Luquillo, Puerto Rico
  6. 2.2 19 km NW of Charlotte Amalie, U.S. Virgin Islands
  7. 2.5 28 km N of Culebra, Puerto Rico
  8. 2.9 28 km NNE of Luquillo, Puerto Rico
  9. 2.6 55 km NNW of Charlotte Amalie, U.S. Virgin Islands
  10. 3.2 69 km N of Charlotte Amalie, U.S. Virgin Islands
  11. 3.3 69 km N of Culebra, Puerto Rico
  12. 2.6 46 km NNE of Charlotte Amalie, U.S. Virgin Islands
  13. 3.1 64 km N of Culebra, Puerto Rico
  14. 3.1 46 km N of Charlotte Amalie, U.S. Virgin Islands
  15. 2.4 46 km NNE of Luquillo, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.2 on 2018-01-07 — it released about 110 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.