QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

5 km NNE of Lluveras, Puerto Rico

· 20 km deep · released about 40 lb of TNT

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10 km30 km60 km120 km N Yauco Municipio 4 kmSabana Grande Municipio 6 kmMaricao Municipio 10 kmGuayanilla Municipio 14 kmSan Germán Municipio 15 kmGuánica Municipio 16 kmAdjuntas Municipio 17 kmLas Marías Municipio 18 kmPeñuelas Municipio 19 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
20 km below the surface
Felt
no reports yet
Nearest
Yauco Municipio, 4 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2754 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 18.0911, -66.8926. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Yauco Municipio, PR 4 km (2 mi) W of here earthquakes near Yauco Municipio
Sabana Grande Municipio, PR 6 km (4 mi) E of here earthquakes near Sabana Grande Municipio
Maricao Municipio, PR 10 km (6 mi) SSE of here earthquakes near Maricao Municipio
Guayanilla Municipio, PR 14 km (9 mi) NW of here earthquakes near Guayanilla Municipio
San Germán Municipio, PR 15 km (10 mi) E of here earthquakes near San Germán Municipio
Guánica Municipio, PR 16 km (10 mi) NNE of here earthquakes near Guánica Municipio

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

Aftershocks so far

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

  1. 2.6 16 km W of Puerto Real, Puerto Rico
  2. 2.1 15 km SSW of Guánica, Puerto Rico
  3. 1.5 2 km S of La Parguera, Puerto Rico
  4. 1.5 6 km WSW of Las Marías, Puerto Rico
  5. 1.6 7 km SE of Jayuya, Puerto Rico
  6. 1.6 6 km ESE of Jayuya, Puerto Rico
  7. 1.7 2 km S of Capitanejo, Puerto Rico
  8. 1.8 2 km N of Playita Cortada, Puerto Rico
  9. 1.9 5 km SSW of Maricao, Puerto Rico
  10. 2.1 3 km NW of Mayagüez, Puerto Rico
  11. 2.0 15 km S of Guánica, Puerto Rico
  12. 1.7 1 km ESE of Tallaboa, Puerto Rico
  13. 2.7 3 km W of Hormigueros, Puerto Rico
  14. 1.6 17 km SSW of Guánica, Puerto Rico
  15. 2.0 5 km SW 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.