QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

28 km NE of Luquillo, Puerto Rico

· 107 km deep · released about 340 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Fajardo Municipio 20 kmLuquillo Municipio 28 kmCulebra Municipio 34 kmRío Grande Municipio 35 kmCeiba Municipio 35 kmNaguabo Municipio 44 kmCanóvanas Municipio 45 kmLoíza Municipio 45 kmVieques Municipio 49 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
107 km below the surface
Felt
no reports yet
Nearest
Fajardo Municipio, 20 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2543 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 18.5531, -65.5278. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fajardo Municipio, PR 20 km (12 mi) NNE of here earthquakes near Fajardo Municipio
Luquillo Municipio, PR 28 km (17 mi) NE of here earthquakes near Luquillo Municipio
Culebra Municipio, PR 34 km (21 mi) NW of here earthquakes near Culebra Municipio
Río Grande Municipio, PR 35 km (22 mi) NE of here earthquakes near Río Grande Municipio
Ceiba Municipio, PR 35 km (22 mi) NNE of here earthquakes near Ceiba Municipio
Naguabo Municipio, PR 44 km (27 mi) NNE of here earthquakes near Naguabo Municipio

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

Aftershocks so far

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

  1. 2.6 43 km NNW of Charlotte Amalie, U.S. Virgin Islands
  2. 1.8 25 km NNE of Vieques, Puerto Rico
  3. 3.1 52 km NNE of Culebra, Puerto Rico
  4. 2.1 28 km NW of Culebra, Puerto Rico
  5. 2.1 41 km NNE of Vieques, Puerto Rico
  6. 2.3 57 km N of Culebra, Puerto Rico
  7. 1.7 15 km E of Luis M. Cintron, Puerto Rico
  8. 1.7 7 km NE of Luis M. Cintron, Puerto Rico
  9. 2.2 9 km SSE of Daguao, Puerto Rico
  10. 2.5 38 km NNW of Culebra, Puerto Rico
  11. 2.4 31 km N of Culebra, Puerto Rico
  12. 2.0 58 km N of Culebra, Puerto Rico
  13. 2.2 69 km NNE of Luquillo, Puerto Rico
  14. 2.6 19 km NNE of Vieques, Puerto Rico
  15. 2.1 64 km N of Culebra, 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.

On USGS

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