QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

Puerto Rico region

· 113 km deep · released about 430 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Arecibo Municipio 11 kmHatillo Municipio 15 kmBarceloneta Municipio 15 kmCamuy Municipio 21 kmFlorida Municipio 22 kmManatí Municipio 23 kmQuebradillas Municipio 26 kmUtuado Municipio 29 kmVega Baja Municipio 32 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
113 km below the surface
Felt
no reports yet
Nearest
Arecibo Municipio, 11 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3250 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 430 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 35,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 25,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.2× the energy of this one
  4. This earthquake M 2.8 about 430 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 18.5308, -66.6883. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Arecibo Municipio, PR 11 km (7 mi) N of here earthquakes near Arecibo Municipio
Hatillo Municipio, PR 15 km (9 mi) NE of here earthquakes near Hatillo Municipio
Barceloneta Municipio, PR 15 km (10 mi) WNW of here earthquakes near Barceloneta Municipio
Camuy Municipio, PR 21 km (13 mi) ENE of here earthquakes near Camuy Municipio
Florida Municipio, PR 22 km (14 mi) NW of here earthquakes near Florida Municipio
Manatí Municipio, PR 23 km (14 mi) WNW of here earthquakes near Manatí Municipio

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

Aftershocks so far

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

  1. 2.5 48 km N of Carrizales, Puerto Rico
  2. 2.2 21 km NNE of Isabela, Puerto Rico
  3. 2.7 26 km NNW of Brenas, Puerto Rico
  4. 2.3 5 km N of Hatillo, Puerto Rico
  5. 1.8 5 km NE of Maricao, Puerto Rico
  6. 2.6 5 km N of Brenas, Puerto Rico
  7. 1.9 8 km NNE of Animas, Puerto Rico
  8. 2.7 10 km NNW of Tierras Nuevas Poniente, Puerto Rico
  9. 1.8 5 km NNE of Villalba, Puerto Rico
  10. 3.0 1 km E of Barceloneta, Puerto Rico
  11. 3.0 11 km N of Camuy, Puerto Rico
  12. 2.5 18 km N of Arecibo, Puerto Rico
  13. 2.9 6 km NNW of Camuy, Puerto Rico
  14. 2.5 2 km WNW of Sabana, Puerto Rico
  15. 2.9 42 km N of Camuy, 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.