QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1Md

4 km W of Pole Ojea, Puerto Rico

· 19 km deep · released about 43 lb of TNT

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10 km30 km60 km120 km N Cabo Rojo Municipio 6 kmLajas Municipio 20 kmHormigueros Municipio 22 kmSan Germán Municipio 26 kmSabana Grande Municipio 33 kmGuánica Municipio 33 kmAñasco Municipio 37 kmMaricao Municipio 39 kmLas Marías Municipio 39 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
19 km below the surface
Felt
no reports yet
Nearest
Cabo Rojo Municipio, 6 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3494 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 43 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 5.8 350,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 250,000× 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 43 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 17.9685, -67.2317. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cabo Rojo Municipio, PR 6 km (4 mi) WSW of here earthquakes near Cabo Rojo Municipio
Lajas Municipio, PR 20 km (13 mi) W of here earthquakes near Lajas Municipio
Hormigueros Municipio, PR 22 km (14 mi) SSW of here earthquakes near Hormigueros Municipio
San Germán Municipio, PR 26 km (16 mi) SW of here earthquakes near San Germán Municipio
Sabana Grande Municipio, PR 33 km (20 mi) WSW of here earthquakes near Sabana Grande Municipio
Guánica Municipio, PR 33 km (20 mi) W of here earthquakes near Guánica 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. 2.5 5 km SSE of Espino, Puerto Rico
  2. 1.8 12 km S of Pole Ojea, Puerto Rico
  3. 1.9 8 km S of La Parguera, Puerto Rico
  4. 2.4 16 km WNW of Puerto Real, Puerto Rico
  5. 2.3 9 km S of Pole Ojea, Puerto Rico
  6. 2.1 14 km SSW of Guánica, Puerto Rico
  7. 2.0 9 km SW of Guánica, Puerto Rico
  8. 2.1 10 km SW of Guánica, Puerto Rico
  9. 2.0 5 km W of La Parguera, Puerto Rico
  10. 1.9 16 km NW of Puerto Real, Puerto Rico
  11. 2.1 1 km NNE of Cabo Rojo, Puerto Rico
  12. 1.6 3 km W of Pole Ojea, Puerto Rico
  13. 1.9 1 km S of Liborio Negron Torres, Puerto Rico
  14. 2.2 2 km NNW of Lluveras, Puerto Rico
  15. 2.7 2 km SSW of Añasco, 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.