QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7Md

6 km ENE of Espino, Puerto Rico

· 28 km deep · released about 340 lb of TNT

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10 km30 km60 km120 km N Añasco Municipio 7 kmMoca Municipio 9 kmSan Sebastián Municipio 11 kmLas Marías Municipio 12 kmAguada Municipio 15 kmHormigueros Municipio 19 kmMaricao Municipio 20 kmRincón Municipio 20 kmLares Municipio 21 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
28 km below the surface
Felt
no reports yet
Nearest
Añasco Municipio, 7 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3734 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 18.3008, -67.0665. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Añasco Municipio, PR 7 km (4 mi) ENE of here earthquakes near Añasco Municipio
Moca Municipio, PR 9 km (5 mi) S of here earthquakes near Moca Municipio
San Sebastián Municipio, PR 11 km (7 mi) WSW of here earthquakes near San Sebastián Municipio
Las Marías Municipio, PR 12 km (8 mi) NW of here earthquakes near Las Marías Municipio
Aguada Municipio, PR 15 km (9 mi) ESE of here earthquakes near Aguada Municipio
Hormigueros Municipio, PR 19 km (12 mi) NNE of here earthquakes near Hormigueros Municipio

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

Aftershocks so far

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

  1. 2.7 2 km SSW of Boquerón, Puerto Rico
  2. 2.1 4 km S of Adjuntas, Puerto Rico
  3. 1.7 11 km W of Puerto Real, Puerto Rico
  4. 2.0 2 km SSW of Cabo Rojo, Puerto Rico
  5. 2.5 1 km SSW of Cabo Rojo, Puerto Rico
  6. 3.7 1 km WSW of Stella, Puerto Rico
  7. 3.2 29 km WNW of Aguadilla, Puerto Rico
  8. 1.5 3 km NW of Hormigueros, Puerto Rico
  9. 2.4 21 km NNE of Isabela, Puerto Rico
  10. 2.6 16 km N of Quebradillas, Puerto Rico
  11. 2.5 28 km NNW of San Antonio, Puerto Rico
  12. 2.1 24 km SW of Stella, Puerto Rico
  13. 1.5 5 km WSW of La Parguera, Puerto Rico
  14. 2.0 Puerto Rico region
  15. 1.8 5 km SSE of Guánica, 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.