QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

Puerto Rico region

· 16 km deep · released about 44 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guánica Municipio 24 kmGuayanilla Municipio 32 kmLajas Municipio 32 kmPeñuelas Municipio 37 kmYauco Municipio 39 kmSabana Grande Municipio 39 kmPonce Municipio 42 kmCabo Rojo Municipio 43 kmSan Germán Municipio 44 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
Guánica Municipio, 24 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2993 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 44 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 5.8 340,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 240,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 44 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 17.7345, -66.8860. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 24 km (15 mi) S of here earthquakes near Guánica Municipio
Guayanilla Municipio, PR 32 km (20 mi) SSW of here earthquakes near Guayanilla Municipio
Lajas Municipio, PR 32 km (20 mi) SSE of here earthquakes near Lajas Municipio
Peñuelas Municipio, PR 37 km (23 mi) SSW of here earthquakes near Peñuelas Municipio
Yauco Municipio, PR 39 km (24 mi) S of here earthquakes near Yauco Municipio
Sabana Grande Municipio, PR 39 km (25 mi) S of here earthquakes near Sabana Grande Municipio

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

Aftershocks so far

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

  1. 1.7 6 km SSE of Adjuntas, Puerto Rico
  2. 1.6 12 km S of La Parguera, Puerto Rico
  3. 1.7 2 km SE of Cabo Rojo, Puerto Rico
  4. 2.3 4 km NNE of La Parguera, Puerto Rico
  5. 1.9 7 km SSE of Ponce, Puerto Rico
  6. 1.8 4 km SSW of Guánica, Puerto Rico
  7. 2.1 4 km NNW of Santo Domingo, Puerto Rico
  8. 1.5 3 km NNW of Sabana Grande, Puerto Rico
  9. 1.8 7 km SSW of Guánica, Puerto Rico
  10. 1.6 4 km SSW of Palmarejo, Puerto Rico
  11. 1.8 8 km ESE of La Parguera, Puerto Rico
  12. 1.8 6 km WSW of Adjuntas, Puerto Rico
  13. 1.8 20 km S of La Parguera, Puerto Rico
  14. 1.6 2 km E of Maria Antonia, Puerto Rico
  15. 1.8 0 km ESE 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.