QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

1 km SSW of Cabo Rojo, Puerto Rico

· 9.0 km deep · released about 7.1 lb of TNT

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10 km30 km60 km120 km N Hormigueros Municipio 8 kmCabo Rojo Municipio 9 kmSan Germán Municipio 13 kmLajas Municipio 16 kmSabana Grande Municipio 22 kmAñasco Municipio 24 kmLas Marías Municipio 26 kmMaricao Municipio 26 kmGuánica Municipio 28 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 1.6 (md)
Depth
9.0 km below the surface
Felt
no reports yet
Nearest
Hormigueros Municipio, 8 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3268 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 7.1 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,500,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.1 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 18.0715, -67.1553. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hormigueros Municipio, PR 8 km (5 mi) SSW of here earthquakes near Hormigueros Municipio
Cabo Rojo Municipio, PR 9 km (5 mi) NNE of here earthquakes near Cabo Rojo Municipio
San Germán Municipio, PR 13 km (8 mi) WSW of here earthquakes near San Germán Municipio
Lajas Municipio, PR 16 km (10 mi) NW of here earthquakes near Lajas Municipio
Sabana Grande Municipio, PR 22 km (14 mi) W of here earthquakes near Sabana Grande Municipio
Añasco Municipio, PR 24 km (15 mi) S of here earthquakes near Añasco Municipio

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

Aftershocks so far

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

  1. 2.0 9 km WSW of Mayagüez, Puerto Rico
  2. 2.1 10 km W of Puerto Real, Puerto Rico
  3. 1.9 4 km ENE of La Parguera, Puerto Rico
  4. 2.0 5 km ENE of La Parguera, Puerto Rico
  5. 1.8 2 km NNW of Palmarejo, Puerto Rico
  6. 2.9 Puerto Rico region
  7. 2.5 16 km SW of Stella, Puerto Rico
  8. 1.9 Mona Passage
  9. 2.2 Puerto Rico region
  10. 3.1 17 km NW of Rincón, Puerto Rico
  11. 2.6 Mona Passage
  12. 2.2 2 km S of Guánica, Puerto Rico
  13. 2.7 21 km SW of Stella, Puerto Rico
  14. 1.6 0 km SE of Fuig, Puerto Rico
  15. 1.6 Puerto Rico region

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.