QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

9 km ENE of Culebra, Puerto Rico

· 22 km deep · released about 290 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Culebra Municipio 10 kmVieques Municipio 32 kmFajardo Municipio 40 kmCeiba Municipio 43 kmLuquillo Municipio 52 kmNaguabo Municipio 56 kmRío Grande Municipio 62 kmHumacao Municipio 64 kmCanóvanas Municipio 71 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 2.7 (md)
Depth
22 km below the surface
Felt
no reports yet
Nearest
Culebra Municipio, 10 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2513 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 290 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 51,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 36,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.2× the energy of this one
  4. This earthquake M 2.7 about 290 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 18.3291, -65.2170. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Culebra Municipio, PR 10 km (6 mi) E of here earthquakes near Culebra Municipio
Vieques Municipio, PR 32 km (20 mi) NE of here earthquakes near Vieques Municipio
Fajardo Municipio, PR 40 km (25 mi) E of here earthquakes near Fajardo Municipio
Ceiba Municipio, PR 43 km (27 mi) ENE of here earthquakes near Ceiba Municipio
Luquillo Municipio, PR 52 km (32 mi) E of here earthquakes near Luquillo Municipio
Naguabo Municipio, PR 56 km (35 mi) ENE of here earthquakes near Naguabo Municipio

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

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

  1. 2.6 19 km NNW of Culebra, Puerto Rico
  2. 3.4 31 km N of Charlotte Amalie, U.S. Virgin Islands
  3. 3.4 7 km NW of Culebra, Puerto Rico
  4. 3.4 44 km N of Culebra, Puerto Rico
  5. 3.8 39 km N of Culebra, Puerto Rico
  6. 2.2 5 km ESE of Aguas Claras, Puerto Rico
  7. 3.7 13 km SSW of Cruz Bay, U.S. Virgin Islands
  8. 3.8 11 km SW of Charlotte Amalie, U.S. Virgin Islands
  9. 3.4 14 km S of Esperanza, Puerto Rico
  10. 3.4 48 km NNW of Charlotte Amalie, U.S. Virgin Islands
  11. 3.0 13 km NNW of Isabel Segunda, Puerto Rico
  12. 2.9 44 km NNW of Charlotte Amalie, U.S. Virgin Islands
  13. 3.7 14 km N of Isabel Segunda, Puerto Rico
  14. 3.5 10 km SSE of Esperanza, Puerto Rico
  15. 3.5 35 km NNW 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.2 on 2019-07-28 — it released about 220 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.