QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

29 km NE of Luquillo, Puerto Rico

· 67 km deep · released about 510 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Fajardo Municipio 23 kmLuquillo Municipio 29 kmRío Grande Municipio 35 kmCeiba Municipio 38 kmCulebra Municipio 39 kmLoíza Municipio 43 kmCanóvanas Municipio 45 kmNaguabo Municipio 46 kmCarolina Municipio 48 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 2.8 (md)
Depth
67 km below the surface
Felt
no reports yet
Nearest
Fajardo Municipio, 23 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2730 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 510 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 30,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 21,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.9× the energy of this one
  4. This earthquake M 2.8 about 510 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 18.5875, -65.5586. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fajardo Municipio, PR 23 km (14 mi) N of here earthquakes near Fajardo Municipio
Luquillo Municipio, PR 29 km (18 mi) NNE of here earthquakes near Luquillo Municipio
Río Grande Municipio, PR 35 km (21 mi) NE of here earthquakes near Río Grande Municipio
Ceiba Municipio, PR 38 km (23 mi) N of here earthquakes near Ceiba Municipio
Culebra Municipio, PR 39 km (24 mi) NW of here earthquakes near Culebra Municipio
Loíza Municipio, PR 43 km (27 mi) ENE of here earthquakes near Loíza 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. 2.8 43 km N of Suárez, Puerto Rico
  2. 2.7 3 km E of Ceiba, Puerto Rico
  3. 2.5 36 km NNE of Suárez, Puerto Rico
  4. 1.9 20 km NNE of Luquillo, Puerto Rico
  5. 2.4 45 km NNW of Charlotte Amalie, U.S. Virgin Islands
  6. 3.0 59 km N of Culebra, Puerto Rico
  7. 2.2 44 km NE of Luquillo, Puerto Rico
  8. 2.3 48 km NNW of Charlotte Amalie, U.S. Virgin Islands
  9. 2.1 37 km NNW of Culebra, Puerto Rico
  10. 2.9 70 km N of Culebra, Puerto Rico
  11. 2.7 57 km N of Culebra, Puerto Rico
  12. 2.4 42 km NNW of Culebra, Puerto Rico
  13. 3.5 32 km N of Culebra, Puerto Rico
  14. 2.3 47 km NNE of Vieques, Puerto Rico
  15. 1.9 25 km N of Loíza, 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.