QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

2 km SSE of Ponce, Puerto Rico

· 16 km deep · released about 49 lb of TNT

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10 km30 km60 km120 km N Ponce Municipio 2 kmPeñuelas Municipio 13 kmJuana Díaz Municipio 13 kmGuayanilla Municipio 20 kmVillalba Municipio 22 kmSanta Isabel Municipio 24 kmJayuya Municipio 25 kmAdjuntas Municipio 27 kmYauco Municipio 28 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
Ponce Municipio, 2 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2918 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 49 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 5.8 310,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 220,000× the energy of this one
  3. Around the size people start to feel M 3.0 19× the energy of this one
  4. This earthquake M 2.1 about 49 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 17.9868, -66.6136. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ponce Municipio, PR 2 km (1 mi) SSW of here earthquakes near Ponce Municipio
Peñuelas Municipio, PR 13 km (8 mi) ESE of here earthquakes near Peñuelas Municipio
Juana Díaz Municipio, PR 13 km (8 mi) W of here earthquakes near Juana Díaz Municipio
Guayanilla Municipio, PR 20 km (12 mi) E of here earthquakes near Guayanilla Municipio
Villalba Municipio, PR 22 km (14 mi) SW of here earthquakes near Villalba Municipio
Santa Isabel Municipio, PR 24 km (15 mi) W of here earthquakes near Santa Isabel Municipio

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

Aftershocks so far

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

  1. 1.9 0 km ESE of Sabana Grande, Puerto Rico
  2. 2.0 1 km SSW of Jauca, Puerto Rico
  3. 2.0 4 km S of Magas Arriba, Puerto Rico
  4. 1.5 4 km N of La Parguera, Puerto Rico
  5. 1.6 1 km SE of Liborio Negron Torres, Puerto Rico
  6. 1.7 1 km NNE of Sabana Grande, Puerto Rico
  7. 1.7 7 km ENE of Sabana Grande, Puerto Rico
  8. 2.0 10 km E of Maricao, Puerto Rico
  9. 1.9 8 km SE of La Parguera, Puerto Rico
  10. 1.9 5 km NW of Adjuntas, Puerto Rico
  11. 1.6 2 km SSW of Palmarejo, Puerto Rico
  12. 2.0 0 km ESE of Palmarejo, Puerto Rico
  13. 1.7 2 km S of Maricao, Puerto Rico
  14. 1.6 3 km SSW of Maricao, Puerto Rico
  15. 2.5 3 km WSW of Maricao, 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.