QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

3 km N of Juncal, Puerto Rico

· 87 km deep · released about 330 lb of TNT

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10 km30 km60 km120 km N San Sebastián Municipio 6 kmLares Municipio 9 kmCamuy Municipio 12 kmQuebradillas Municipio 13 kmLas Marías Municipio 15 kmHatillo Municipio 16 kmMoca Municipio 18 kmIsabela Municipio 18 kmMaricao Municipio 19 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
87 km below the surface
Felt
no reports yet
Nearest
San Sebastián Municipio, 6 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2671 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 330 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 46,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 33,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.9× the energy of this one
  4. This earthquake M 2.7 about 330 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 18.3478, -66.9165. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Sebastián Municipio, PR 6 km (4 mi) ENE of here earthquakes near San Sebastián Municipio
Lares Municipio, PR 9 km (6 mi) NNW of here earthquakes near Lares Municipio
Camuy Municipio, PR 12 km (8 mi) SSW of here earthquakes near Camuy Municipio
Quebradillas Municipio, PR 13 km (8 mi) S of here earthquakes near Quebradillas Municipio
Las Marías Municipio, PR 15 km (9 mi) NNE of here earthquakes near Las Marías Municipio
Hatillo Municipio, PR 16 km (10 mi) SW of here earthquakes near Hatillo 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. 1.8 2 km N of Sabana Grande, Puerto Rico
  2. 1.5 1 km NNE of Sabana Grande, Puerto Rico
  3. 1.9 Puerto Rico region
  4. 1.8 2 km WNW of Hormigueros, Puerto Rico
  5. 1.8 7 km NNW of Villalba, Puerto Rico
  6. 1.8 4 km SE of La Parguera, Puerto Rico
  7. 1.9 3 km NNE of Sabana Eneas, Puerto Rico
  8. 2.1 5 km SSW of La Parguera, Puerto Rico
  9. 1.8 6 km SSW of La Parguera, Puerto Rico
  10. 1.8 1 km NNW of Boquerón, Puerto Rico
  11. 2.0 9 km NW of Camuy, Puerto Rico
  12. 2.1 2 km ENE of Rafael Hernandez, Puerto Rico
  13. 2.1 3 km S of Monte Grande, Puerto Rico
  14. 2.4 22 km NW of Aguadilla, Puerto Rico
  15. 2.4 29 km NNW of Isabela, 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.