QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

24 km S of Tallaboa, Puerto Rico

· 21 km deep · released about 51 lb of TNT

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10 km30 km60 km120 km N Ponce Municipio 27 kmPeñuelas Municipio 29 kmGuayanilla Municipio 29 kmJuana Díaz Municipio 32 kmGuánica Municipio 32 kmSanta Isabel Municipio 37 kmYauco Municipio 40 kmLajas Municipio 45 kmSabana Grande Municipio 45 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
21 km below the surface
Felt
no reports yet
Nearest
Ponce Municipio, 27 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3259 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 51 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 5.8 300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 210,000× 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 51 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 17.7726, -66.6788. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ponce Municipio, PR 27 km (17 mi) SSW of here earthquakes near Ponce Municipio
Peñuelas Municipio, PR 29 km (18 mi) S of here earthquakes near Peñuelas Municipio
Guayanilla Municipio, PR 29 km (18 mi) SSE of here earthquakes near Guayanilla Municipio
Juana Díaz Municipio, PR 32 km (20 mi) SW of here earthquakes near Juana Díaz Municipio
Guánica Municipio, PR 32 km (20 mi) SE of here earthquakes near Guánica Municipio
Santa Isabel Municipio, PR 37 km (23 mi) WSW 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

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

  1. 2.7 2 km SSW of Liborio Negron Torres, Puerto Rico
  2. 1.9 Mona Passage
  3. 1.6 5 km E of La Parguera, Puerto Rico
  4. 2.8 7 km SSE of Maria Antonia, Puerto Rico
  5. 1.9 1 km SSW of Guayabal, Puerto Rico
  6. 1.8 5 km NNE of Villalba, Puerto Rico
  7. 1.7 13 km S of Indios, Puerto Rico
  8. 2.0 5 km SE of Ponce, Puerto Rico
  9. 2.2 6 km ENE of La Parguera, Puerto Rico
  10. 2.2 19 km SSE of Tallaboa, Puerto Rico
  11. 1.8 2 km ESE of Sabana Grande, Puerto Rico
  12. 2.6 24 km SSE of Pole Ojea, Puerto Rico
  13. 1.8 4 km NE of La Parguera, Puerto Rico
  14. 2.3 2 km NNW of Potala Pastillo, Puerto Rico
  15. 1.9 4 km ENE of La Parguera, 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.