QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7Md

13 km S of Culebra, Puerto Rico

· 103 km deep · released about 340 lb of TNT

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10 km30 km60 km120 km N Vieques Municipio 14 kmCulebra Municipio 16 kmCeiba Municipio 34 kmFajardo Municipio 37 kmNaguabo Municipio 45 kmLuquillo Municipio 47 kmHumacao Municipio 51 kmRío Grande Municipio 56 kmLas Piedras Municipio 59 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
103 km below the surface
Felt
no reports yet
Nearest
Vieques Municipio, 14 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3538 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 340 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 45,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 32,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.8× the energy of this one
  4. This earthquake M 2.7 about 340 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 18.1858, -65.3109. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Vieques Municipio, PR 14 km (9 mi) ENE of here earthquakes near Vieques Municipio
Culebra Municipio, PR 16 km (10 mi) S of here earthquakes near Culebra Municipio
Ceiba Municipio, PR 34 km (21 mi) ESE of here earthquakes near Ceiba Municipio
Fajardo Municipio, PR 37 km (23 mi) SE of here earthquakes near Fajardo Municipio
Naguabo Municipio, PR 45 km (28 mi) E of here earthquakes near Naguabo Municipio
Luquillo Municipio, PR 47 km (29 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

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

  1. 3.0 24 km SW of Esperanza, Puerto Rico
  2. 2.5 26 km SW of Esperanza, Puerto Rico
  3. 2.3 27 km SW of Esperanza, Puerto Rico
  4. 1.9 1 km NE of Río Blanco, Puerto Rico
  5. 2.1 Puerto Rico region
  6. 2.9 27 km SW of Esperanza, Puerto Rico
  7. 2.3 28 km SW of Esperanza, Puerto Rico
  8. 2.9 Puerto Rico region
  9. 1.9 27 km SSW of Esperanza, Puerto Rico
  10. 3.3 25 km SW of Esperanza, Puerto Rico
  11. 3.0 25 km SW of Esperanza, Puerto Rico
  12. 2.0 27 km SE of El Negro, Puerto Rico
  13. 2.0 27 km SW of Esperanza, Puerto Rico
  14. 2.1 26 km SW of Esperanza, Puerto Rico
  15. 2.7 27 km SSW of Esperanza, 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 4.3 on 2016-09-02 — it released about 250 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.