QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

19 km S of Guánica, Puerto Rico

· 29 km deep · released about 24 lb of TNT

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10 km30 km60 km120 km N Guánica Municipio 17 kmGuayanilla Municipio 24 kmLajas Municipio 26 kmPeñuelas Municipio 30 kmYauco Municipio 32 kmSabana Grande Municipio 32 kmPonce Municipio 37 kmSan Germán Municipio 38 kmCabo Rojo Municipio 38 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 1.9 (md)
Depth
29 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 17 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2865 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 24 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 640,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 450,000× the energy of this one
  3. Around the size people start to feel M 3.0 40× the energy of this one
  4. This earthquake M 1.9 about 24 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 17.8011, -66.8830. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 17 km (10 mi) SSE of here earthquakes near Guánica Municipio
Guayanilla Municipio, PR 24 km (15 mi) SSW of here earthquakes near Guayanilla Municipio
Lajas Municipio, PR 26 km (16 mi) SE of here earthquakes near Lajas Municipio
Peñuelas Municipio, PR 30 km (19 mi) SSW of here earthquakes near Peñuelas Municipio
Yauco Municipio, PR 32 km (20 mi) S of here earthquakes near Yauco Municipio
Sabana Grande Municipio, PR 32 km (20 mi) SSE of here earthquakes near Sabana Grande Municipio

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

Aftershocks so far

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

  1. 1.6 5 km SW of Tallaboa, Puerto Rico
  2. 2.1 15 km SSW of Guánica, Puerto Rico
  3. 2.1 19 km SSW of Guánica, Puerto Rico
  4. 1.6 8 km S of Tallaboa, Puerto Rico
  5. 2.0 8 km S of Tallaboa, Puerto Rico
  6. 2.2 12 km S of Tallaboa, Puerto Rico
  7. 2.0 Puerto Rico region
  8. 2.3 2 km NW of Puerto Real, Puerto Rico
  9. 2.1 5 km W of Maricao, Puerto Rico
  10. 1.6 4 km WSW of La Parguera, Puerto Rico
  11. 2.3 2 km SSW of Adjuntas, Puerto Rico
  12. 2.3 4 km ESE of Ponce, Puerto Rico
  13. 2.0 Puerto Rico region
  14. 1.6 4 km SSW of Playita Cortada, Puerto Rico
  15. 1.9 3 km ESE of Ponce, 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.