QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7Md

9 km SSE of Jauca, Puerto Rico

· 4.0 km deep · released about 340 lb of TNT

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10 km30 km60 km120 km N Santa Isabel Municipio 9 kmSalinas Municipio 13 kmJuana Díaz Municipio 20 kmGuayama Municipio 24 kmCoamo Municipio 24 kmAibonito Municipio 29 kmVillalba Municipio 30 kmPonce Municipio 31 kmCayey 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 2.7 (Md)
Depth
4.0 km below the surface
Felt
no reports yet
Nearest
Santa Isabel Municipio, 9 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3576 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 17.8852, -66.3445. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Santa Isabel Municipio, PR 9 km (5 mi) SSE of here earthquakes near Santa Isabel Municipio
Salinas Municipio, PR 13 km (8 mi) SW of here earthquakes near Salinas Municipio
Juana Díaz Municipio, PR 20 km (12 mi) SE of here earthquakes near Juana Díaz Municipio
Guayama Municipio, PR 24 km (15 mi) WSW of here earthquakes near Guayama Municipio
Coamo Municipio, PR 24 km (15 mi) S of here earthquakes near Coamo Municipio
Aibonito Municipio, PR 29 km (18 mi) SSW of here earthquakes near Aibonito Municipio

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

Aftershocks so far

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

  1. 2.2 2 km E of Potala Pastillo, Puerto Rico
  2. 2.2 1 km SW of Salinas, Puerto Rico
  3. 2.4 4 km ESE of Villalba, Puerto Rico
  4. 2.7 1 km WNW of Potala Pastillo, Puerto Rico
  5. 2.4 3 km NNW of Jagual, Puerto Rico
  6. 2.6 4 km S of G. L. Garcia, Puerto Rico
  7. 2.5 21 km S of Ponce, Puerto Rico
  8. 2.5 Puerto Rico region
  9. 3.9 6 km WNW of Aguas Buenas, Puerto Rico
  10. 2.3 16 km S of Ponce, Puerto Rico
  11. 1.9 13 km S of Ponce, Puerto Rico
  12. 2.0 0 km SSW of Las Ollas, Puerto Rico
  13. 2.0 18 km S of Ponce, Puerto Rico
  14. 2.3 16 km S of Ponce, Puerto Rico
  15. 2.4 13 km S of Ponce, 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.