QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

6 km S of Tallaboa, Puerto Rico

· 9.0 km deep · released about 630 lb of TNT

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10 km30 km60 km120 km N Peñuelas Municipio 10 kmGuayanilla Municipio 12 kmPonce Municipio 13 kmGuánica Municipio 23 kmYauco Municipio 23 kmJuana Díaz Municipio 24 kmAdjuntas Municipio 27 kmSabana Grande Municipio 30 kmVillalba 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 2.9 (md)
Depth
9.0 km below the surface
Felt
no reports yet
Nearest
Peñuelas Municipio, 10 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2523 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 630 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 24,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 17,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.5× the energy of this one
  4. This earthquake M 2.9 about 630 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 17.9388, -66.7096. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Peñuelas Municipio, PR 10 km (6 mi) SSE of here earthquakes near Peñuelas Municipio
Guayanilla Municipio, PR 12 km (7 mi) SE of here earthquakes near Guayanilla Municipio
Ponce Municipio, PR 13 km (8 mi) WSW of here earthquakes near Ponce Municipio
Guánica Municipio, PR 23 km (14 mi) E of here earthquakes near Guánica Municipio
Yauco Municipio, PR 23 km (14 mi) SE of here earthquakes near Yauco Municipio
Juana Díaz Municipio, PR 24 km (15 mi) WSW of here earthquakes near Juana Díaz Municipio

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

Aftershocks so far

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

  1. 2.0 1 km NE of Hormigueros, Puerto Rico
  2. 1.9 12 km SSE of Ponce, Puerto Rico
  3. 2.0 6 km NNE of Sabana Grande, Puerto Rico
  4. 2.8 37 km SSE of Tallaboa, Puerto Rico
  5. 2.1 8 km SW of La Parguera, Puerto Rico
  6. 2.3 9 km SW of La Parguera, Puerto Rico
  7. 2.1 12 km SSE of Ponce, Puerto Rico
  8. 2.0 9 km SSW of La Parguera, Puerto Rico
  9. 2.2 5 km SW of La Parguera, Puerto Rico
  10. 2.3 9 km SSW of Potala Pastillo, Puerto Rico
  11. 1.9 4 km ENE of Hormigueros, Puerto Rico
  12. 1.8 13 km S of Ponce, Puerto Rico
  13. 1.8 1 km S of Guayanilla, Puerto Rico
  14. 1.9 1 km ENE of Sabana Grande, Puerto Rico
  15. 2.1 0 km NNW of Mariano Colón, 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

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