QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

3 km N of Santo Domingo, Puerto Rico

· 16 km deep · released about 40 lb of TNT

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10 km30 km60 km120 km N Peñuelas Municipio 8 kmAdjuntas Municipio 9 kmYauco Municipio 11 kmGuayanilla Municipio 11 kmPonce Municipio 19 kmUtuado Municipio 20 kmSabana Grande Municipio 21 kmMaricao Municipio 21 kmJayuya 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 2.1 (md)
Depth
16 km below the surface
Felt
no reports yet
Nearest
Peñuelas Municipio, 8 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2964 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 40 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 380,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 270,000× the energy of this one
  3. Around the size people start to feel M 3.0 24× the energy of this one
  4. This earthquake M 2.1 about 40 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 18.0976, -66.7511. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Peñuelas Municipio, PR 8 km (5 mi) NNW of here earthquakes near Peñuelas Municipio
Adjuntas Municipio, PR 9 km (6 mi) S of here earthquakes near Adjuntas Municipio
Yauco Municipio, PR 11 km (7 mi) E of here earthquakes near Yauco Municipio
Guayanilla Municipio, PR 11 km (7 mi) NNE of here earthquakes near Guayanilla Municipio
Ponce Municipio, PR 19 km (12 mi) NW of here earthquakes near Ponce Municipio
Utuado Municipio, PR 20 km (12 mi) SSW of here earthquakes near Utuado 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. 2.3 1 km SW of Hormigueros, Puerto Rico
  2. 1.9 5 km NNW of Puerto Real, Puerto Rico
  3. 2.1 1 km E of Maria Antonia, Puerto Rico
  4. 2.0 1 km SE of Palmarejo, Puerto Rico
  5. 2.0 3 km NE of La Parguera, Puerto Rico
  6. 2.3 2 km ESE of Tallaboa Alta, Puerto Rico
  7. 2.0 11 km SSE of Lares, Puerto Rico
  8. 1.9 2 km SSE of Maria Antonia, Puerto Rico
  9. 1.8 0 km E of Maricao, Puerto Rico
  10. 1.7 6 km WSW of Maricao, Puerto Rico
  11. 2.5 6 km NNE of Carrizales, Puerto Rico
  12. 2.0 1 km ESE of Maria Antonia, Puerto Rico
  13. 2.2 9 km ESE of Maricao, Puerto Rico
  14. 1.6 5 km NE of Maricao, Puerto Rico
  15. 2.4 Puerto Rico region

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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