QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

9 km ESE of Adjuntas, Puerto Rico

· 19 km deep · released about 47 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Jayuya Municipio 12 kmPonce Municipio 14 kmPeñuelas Municipio 14 kmAdjuntas Municipio 14 kmUtuado Municipio 18 kmVillalba Municipio 18 kmGuayanilla Municipio 21 kmJuana Díaz Municipio 21 kmYauco Municipio 23 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
19 km below the surface
Felt
no reports yet
Nearest
Jayuya Municipio, 12 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3372 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 47 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 5.8 320,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 230,000× the energy of this one
  3. Around the size people start to feel M 3.0 20× the energy of this one
  4. This earthquake M 2.1 about 47 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 18.1196, -66.6423. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Jayuya Municipio, PR 12 km (7 mi) SSW of here earthquakes near Jayuya Municipio
Ponce Municipio, PR 14 km (8 mi) NNW of here earthquakes near Ponce Municipio
Peñuelas Municipio, PR 14 km (9 mi) NE of here earthquakes near Peñuelas Municipio
Adjuntas Municipio, PR 14 km (9 mi) ESE of here earthquakes near Adjuntas Municipio
Utuado Municipio, PR 18 km (11 mi) SSE of here earthquakes near Utuado Municipio
Villalba Municipio, PR 18 km (11 mi) W of here earthquakes near Villalba Municipio

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

Aftershocks so far

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

  1. 1.8 6 km NNW of Sabana Grande, Puerto Rico
  2. 2.2 2 km NW of Tallaboa, Puerto Rico
  3. 2.7 6 km N of Santo Domingo, Puerto Rico
  4. 3.0 0 km ENE of Río Cañas Abajo, Puerto Rico
  5. 2.5 1 km ENE of Salinas, Puerto Rico
  6. 1.9 9 km ESE of Maricao, Puerto Rico
  7. 1.9 2 km SE of Lajas, Puerto Rico
  8. 1.9 22 km S of Guánica, Puerto Rico
  9. 2.0 3 km NW of Sabana Grande, Puerto Rico
  10. 1.7 7 km N of Yauco, Puerto Rico
  11. 1.6 6 km NNE of Lluveras, Puerto Rico
  12. 1.6 6 km SSW of Maricao, Puerto Rico
  13. 2.6 4 km SW of Maricao, Puerto Rico
  14. 1.8 8 km NNW of Yauco, Puerto Rico
  15. 2.0 6 km NW of Sabana Grande, 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.