QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

10 km NNW of Puerto Real, Puerto Rico

· 15 km deep · released about 91 lb of TNT

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10 km30 km60 km120 km N Hormigueros Municipio 13 kmAñasco Municipio 19 kmCabo Rojo Municipio 19 kmRincón Municipio 20 kmSan Germán Municipio 22 kmAguada Municipio 25 kmLas Marías Municipio 29 kmLajas Municipio 29 kmMoca Municipio 30 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
15 km below the surface
Felt
no reports yet
Nearest
Hormigueros Municipio, 13 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2900 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 91 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 5.8 170,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 120,000× the energy of this one
  3. Around the size people start to feel M 3.0 10× the energy of this one
  4. This earthquake M 2.3 about 91 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 18.1563, -67.2418. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hormigueros Municipio, PR 13 km (8 mi) W of here earthquakes near Hormigueros Municipio
Añasco Municipio, PR 19 km (12 mi) SW of here earthquakes near Añasco Municipio
Cabo Rojo Municipio, PR 19 km (12 mi) NNW of here earthquakes near Cabo Rojo Municipio
Rincón Municipio, PR 20 km (13 mi) S of here earthquakes near Rincón Municipio
San Germán Municipio, PR 22 km (14 mi) WNW of here earthquakes near San Germán Municipio
Aguada Municipio, PR 25 km (16 mi) SSW of here earthquakes near Aguada 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. 2.0 Puerto Rico region
  2. 2.1 1 km E of Cabo Rojo, Puerto Rico
  3. 2.0 1 km S of Boquerón, Puerto Rico
  4. 2.4 2 km SSW of Boquerón, Puerto Rico
  5. 2.0 10 km SSW of Guánica, Puerto Rico
  6. 2.0 9 km SSW of Guánica, Puerto Rico
  7. 2.3 17 km SW of Pole Ojea, Puerto Rico
  8. 2.1 34 km WNW of Rincón, Puerto Rico
  9. 2.4 10 km NW of Puerto Real, Puerto Rico
  10. 2.1 2 km W of Palmarejo, Puerto Rico
  11. 1.6 0 km E of Boquerón, Puerto Rico
  12. 2.5 1 km SW of Boquerón, Puerto Rico
  13. 2.9 20 km WSW of Pole Ojea, Puerto Rico
  14. 1.6 6 km NE of Sabana Grande, Puerto Rico
  15. 2.5 0 km N of San Antonio, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.3 on 2017-10-14 — it released about 930 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.