QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

11 km S of Jauca, Puerto Rico

· 7.0 km deep · released about 350 lb of TNT

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10 km30 km60 km120 km N Santa Isabel Municipio 10 kmSalinas Municipio 15 kmJuana Díaz Municipio 21 kmGuayama Municipio 25 kmCoamo Municipio 26 kmAibonito Municipio 30 kmPonce Municipio 31 kmVillalba Municipio 32 kmCayey 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
7.0 km below the surface
Felt
no reports yet
Nearest
Santa Isabel Municipio, 10 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3204 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 350 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 43,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 31,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.7× the energy of this one
  4. This earthquake M 2.7 about 350 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 17.8693, -66.3493. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Santa Isabel Municipio, PR 10 km (6 mi) SSE of here earthquakes near Santa Isabel Municipio
Salinas Municipio, PR 15 km (9 mi) SW of here earthquakes near Salinas Municipio
Juana Díaz Municipio, PR 21 km (13 mi) SE of here earthquakes near Juana Díaz Municipio
Guayama Municipio, PR 25 km (16 mi) WSW of here earthquakes near Guayama Municipio
Coamo Municipio, PR 26 km (16 mi) S of here earthquakes near Coamo Municipio
Aibonito Municipio, PR 30 km (19 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

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

  1. 2.2 6 km SW of Tallaboa, Puerto Rico
  2. 1.7 9 km SSW of Tallaboa, Puerto Rico
  3. 2.2 9 km SSW of Tallaboa, Puerto Rico
  4. 2.7 10 km S of Jobos, Puerto Rico
  5. 2.2 12 km S of Ponce, Puerto Rico
  6. 1.5 3 km SSW of Arroyo, Puerto Rico
  7. 2.4 5 km N of Yaurel, Puerto Rico
  8. 2.6 Puerto Rico region
  9. 3.0 4 km SE of G. L. Garcia, Puerto Rico
  10. 1.9 12 km SSE of Indios, Puerto Rico
  11. 2.2 7 km SSW of Tallaboa, Puerto Rico
  12. 1.9 11 km S of Tallaboa, Puerto Rico
  13. 1.7 10 km SSW of Tallaboa, Puerto Rico
  14. 2.2 23 km S of Indios, Puerto Rico
  15. 2.0 9 km NNE of Tallaboa, 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.