QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7Md

10 km NW of Puerto Real, Puerto Rico

· 25 km deep · released about 340 lb of TNT

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10 km30 km60 km120 km N Hormigueros Municipio 16 kmCabo Rojo Municipio 17 kmAñasco Municipio 22 kmRincón Municipio 23 kmSan Germán Municipio 24 kmAguada Municipio 28 kmLajas Municipio 29 kmLas Marías Municipio 32 kmMoca Municipio 33 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
25 km below the surface
Felt
no reports yet
Nearest
Hormigueros Municipio, 16 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3471 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 18.1333, -67.2636. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hormigueros Municipio, PR 16 km (10 mi) W of here earthquakes near Hormigueros Municipio
Cabo Rojo Municipio, PR 17 km (11 mi) NNW of here earthquakes near Cabo Rojo Municipio
Añasco Municipio, PR 22 km (14 mi) SW of here earthquakes near Añasco Municipio
Rincón Municipio, PR 23 km (14 mi) S of here earthquakes near Rincón Municipio
San Germán Municipio, PR 24 km (15 mi) W of here earthquakes near San Germán Municipio
Aguada Municipio, PR 28 km (18 mi) SSW of here earthquakes near Aguada Municipio

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

Aftershocks so far

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

  1. 2.7 1 km ENE of Mayagüez, Puerto Rico
  2. 2.0 2 km WSW of Sabana Grande, Puerto Rico
  3. 2.3 3 km SSE of La Parguera, Puerto Rico
  4. 1.9 9 km SW of La Parguera, Puerto Rico
  5. 2.3 9 km SW of Guánica, Puerto Rico
  6. 2.5 19 km WNW of Rincón, Puerto Rico
  7. 2.7 19 km SW of Stella, Puerto Rico
  8. 1.6 3 km SW of Mayagüez, Puerto Rico
  9. 2.3 1 km NW of Liborio Negron Torres, Puerto Rico
  10. 1.6 5 km WSW of La Parguera, Puerto Rico
  11. 2.1 1 km ESE of Mayagüez, Puerto Rico
  12. 2.0 4 km NW of Rincón, Puerto Rico
  13. 2.1 17 km WNW of Rincón, Puerto Rico
  14. 2.1 2 km SE of Sabana Eneas, Puerto Rico
  15. 2.9 34 km WSW of Stella, 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.