QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

6 km S of Tallaboa, Puerto Rico

· 6.0 km deep · released about 40 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 28 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 2.1 (md)
Depth
6.0 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 2776 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 17.9376, -66.7073. 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 (8 mi) SE of here earthquakes near Guayanilla Municipio
Ponce Municipio, PR 13 km (8 mi) SW 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

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

  1. 1.8 2 km NW of Indios, Puerto Rico
  2. 1.5 1 km NNW of Yauco, Puerto Rico
  3. 1.7 3 km S of Maricao, Puerto Rico
  4. 2.2 7 km WSW of Maricao, Puerto Rico
  5. 2.5 2 km S of Las Marías, Puerto Rico
  6. 1.9 10 km SSE of Tallaboa, Puerto Rico
  7. 1.9 1 km S of Lajas, Puerto Rico
  8. 1.6 5 km WSW of Palmarejo, Puerto Rico
  9. 1.8 2 km SSE of Santa Isabel, Puerto Rico
  10. 2.2 9 km SW of La Parguera, Puerto Rico
  11. 1.8 6 km E of Maricao, Puerto Rico
  12. 1.9 2 km N of Monte Grande, Puerto Rico
  13. 2.4 3 km SE of Hormigueros, Puerto Rico
  14. 1.7 1 km NW of Parcelas Peñuelas, Puerto Rico
  15. 1.6 1 km SW of Guánica, 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.