QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2md

3 km S of Cabo Rojo, Puerto Rico

· 6.0 km deep · released about 1,800 lb of TNT

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10 km30 km60 km120 km N Cabo Rojo Municipio 8 kmHormigueros Municipio 9 kmSan Germán Municipio 12 kmLajas Municipio 14 kmSabana Grande Municipio 21 kmMaricao Municipio 25 kmAñasco Municipio 26 kmLas Marías Municipio 26 kmGuánica Municipio 26 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 3.2 (md)
Depth
6.0 km below the surface
Felt
7 reports · strongest reported intensity III
Nearest
Cabo Rojo Municipio, 8 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 53 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 7 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,800 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 180,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 8,200× the energy of this one
  3. Magna, Utah 2020 M 5.7 5,800× the energy of this one
  4. This earthquake M 3.2 about 1,800 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.9× more

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 18.0573, -67.1421. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cabo Rojo Municipio, PR 8 km (5 mi) NNE of here earthquakes near Cabo Rojo Municipio
Hormigueros Municipio, PR 9 km (6 mi) SSW of here earthquakes near Hormigueros Municipio
San Germán Municipio, PR 12 km (8 mi) WSW of here earthquakes near San Germán Municipio
Lajas Municipio, PR 14 km (9 mi) NW of here earthquakes near Lajas Municipio
Sabana Grande Municipio, PR 21 km (13 mi) W of here earthquakes near Sabana Grande Municipio
Maricao Municipio, PR 25 km (16 mi) WSW of here earthquakes near Maricao 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. 2.2 0 km ENE of Fuig, Puerto Rico
  2. 2.2 3 km NNW of Tallaboa, Puerto Rico
  3. 2.0 8 km SE of La Parguera, Puerto Rico
  4. 2.1 1 km NNE of Guánica, Puerto Rico
  5. 2.1 1 km E of Magas Arriba, Puerto Rico
  6. 2.3 2 km W of Palomas, Puerto Rico
  7. 2.1 3 km E of La Parguera, Puerto Rico
  8. 1.9 8 km SE of La Parguera, Puerto Rico
  9. 2.3 4 km N of Adjuntas, Puerto Rico
  10. 2.6 5 km SSW of Utuado, Puerto Rico
  11. 2.0 3 km SSE of Maria Antonia, Puerto Rico
  12. 2.1 7 km SW of Guánica, Puerto Rico
  13. 2.3 9 km SSE of Lares, Puerto Rico
  14. 2.3 1 km SSE of Tallaboa, Puerto Rico
  15. 2.4 1 km WSW of Indios, 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 6.4 on 2020-01-07 — it released about 65,000 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.