QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

2 km NE of Hormigueros, Puerto Rico

· 25 km deep · released about 98 lb of TNT

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10 km30 km60 km120 km N Hormigueros Municipio 2 kmSan Germán Municipio 9 kmAñasco Municipio 15 kmLas Marías Municipio 16 kmCabo Rojo Municipio 19 kmMaricao Municipio 19 kmSabana Grande Municipio 19 kmLajas Municipio 21 kmSan Sebastián Municipio 25 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 2.3 (md)
Depth
25 km below the surface
Felt
no reports yet
Nearest
Hormigueros Municipio, 2 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3358 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 98 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 150,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 110,000× the energy of this one
  3. Around the size people start to feel M 3.0 9.8× the energy of this one
  4. This earthquake M 2.3 about 98 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 18.1533, -67.1126. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hormigueros Municipio, PR 2 km (1 mi) N of here earthquakes near Hormigueros Municipio
San Germán Municipio, PR 9 km (6 mi) WNW of here earthquakes near San Germán Municipio
Añasco Municipio, PR 15 km (9 mi) S of here earthquakes near Añasco Municipio
Las Marías Municipio, PR 16 km (10 mi) WSW of here earthquakes near Las Marías Municipio
Cabo Rojo Municipio, PR 19 km (12 mi) NNE of here earthquakes near Cabo Rojo Municipio
Maricao Municipio, PR 19 km (12 mi) W of here earthquakes near Maricao Municipio

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

Aftershocks so far

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

  1. 1.7 3 km SSE of Monte Grande, Puerto Rico
  2. 1.8 4 km SSE of Maricao, Puerto Rico
  3. 2.5 17 km NW of Rincón, Puerto Rico
  4. 2.2 0 km N of Magas Arriba, Puerto Rico
  5. 1.8 5 km SW of Mayagüez, Puerto Rico
  6. 2.1 14 km SSW of Guánica, Puerto Rico
  7. 2.9 12 km SSW of Guánica, Puerto Rico
  8. 2.4 11 km SW of Guánica, Puerto Rico
  9. 2.6 11 km SSW of Guánica, Puerto Rico
  10. 2.3 20 km SSW of Guánica, Puerto Rico
  11. 2.6 0 km WSW of Sabana Eneas, Puerto Rico
  12. 2.5 18 km SSW of Guánica, Puerto Rico
  13. 2.1 4 km E of Espino, Puerto Rico
  14. 2.3 12 km SSW of Guánica, Puerto Rico
  15. 2.1 6 km ESE 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.