QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

8 km ENE of Sabana Grande, Puerto Rico

· 14 km deep · released about 6.4 lb of TNT

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10 km30 km60 km120 km N Yauco Municipio 5 kmSabana Grande Municipio 7 kmMaricao Municipio 8 kmGuayanilla Municipio 16 kmLas Marías Municipio 16 kmAdjuntas Municipio 16 kmSan Germán Municipio 16 kmLares Municipio 18 kmGuánica Municipio 19 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
14 km below the surface
Felt
no reports yet
Nearest
Yauco Municipio, 5 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2991 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 6.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.6 about 6.4 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 18.1155, -66.8890. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Yauco Municipio, PR 5 km (3 mi) NW of here earthquakes near Yauco Municipio
Sabana Grande Municipio, PR 7 km (4 mi) ENE of here earthquakes near Sabana Grande Municipio
Maricao Municipio, PR 8 km (5 mi) SE of here earthquakes near Maricao Municipio
Guayanilla Municipio, PR 16 km (10 mi) NW of here earthquakes near Guayanilla Municipio
Las Marías Municipio, PR 16 km (10 mi) SE of here earthquakes near Las Marías Municipio
Adjuntas Municipio, PR 16 km (10 mi) WSW of here earthquakes near Adjuntas 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. 1.8 6 km W of Puerto Real, Puerto Rico
  2. 1.5 3 km NNW of Sabana Grande, Puerto Rico
  3. 1.8 7 km SSW of Guánica, Puerto Rico
  4. 1.7 7 km W of Puerto Real, Puerto Rico
  5. 1.6 4 km SSW of Palmarejo, Puerto Rico
  6. 1.8 8 km ESE of La Parguera, Puerto Rico
  7. 1.8 6 km WSW of Adjuntas, Puerto Rico
  8. 1.8 20 km S of La Parguera, Puerto Rico
  9. 1.6 2 km E of Maria Antonia, Puerto Rico
  10. 2.4 6 km SW of Stella, Puerto Rico
  11. 2.0 1 km W of Guayabal, Puerto Rico
  12. 1.8 3 km NE of Hatillo, Puerto Rico
  13. 1.8 0 km ESE of La Parguera, Puerto Rico
  14. 1.9 4 km WSW of Las Marías, Puerto Rico
  15. 2.2 1 km SW of Espino, 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.