QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

4 km SSW of Liborio Negron Torres, Puerto Rico

· 14 km deep · released about 6.2 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guánica Municipio 7 kmLajas Municipio 9 kmSabana Grande Municipio 9 kmYauco Municipio 14 kmSan Germán Municipio 14 kmGuayanilla Municipio 17 kmMaricao Municipio 19 kmHormigueros Municipio 22 kmCabo Rojo Municipio 23 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 1.5 (md)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 7 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2982 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 6.2 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 2,500,000× 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 1.5 about 6.2 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 18.0046, -66.9598. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 7 km (5 mi) NNW of here earthquakes near Guánica Municipio
Lajas Municipio, PR 9 km (6 mi) ENE of here earthquakes near Lajas Municipio
Sabana Grande Municipio, PR 9 km (6 mi) S of here earthquakes near Sabana Grande Municipio
Yauco Municipio, PR 14 km (9 mi) SW of here earthquakes near Yauco Municipio
San Germán Municipio, PR 14 km (9 mi) SE of here earthquakes near San Germán Municipio
Guayanilla Municipio, PR 17 km (11 mi) W of here earthquakes near Guayanilla Municipio

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

Aftershocks so far

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

  1. 1.7 2 km NNE of Santo Domingo, Puerto Rico
  2. 1.6 11 km S of Pole Ojea, Puerto Rico
  3. 2.3 1 km W of Hormigueros, Puerto Rico
  4. 2.5 3 km NW of Las Marias, Puerto Rico
  5. 2.1 4 km SSW of San Sebastián, Puerto Rico
  6. 1.6 4 km SSW of Adjuntas, Puerto Rico
  7. 2.1 3 km N of Santo Domingo, Puerto Rico
  8. 2.0 1 km NNE of Boquerón, Puerto Rico
  9. 2.0 2 km NW of Hormigueros, Puerto Rico
  10. 1.7 4 km ESE of Maricao, Puerto Rico
  11. 1.9 4 km SE of Lajas, Puerto Rico
  12. 2.2 1 km SSE of Adjuntas, Puerto Rico
  13. 1.6 2 km SSW of Pole Ojea, Puerto Rico
  14. 1.6 3 km SW of Adjuntas, Puerto Rico
  15. 2.1 3 km E of Hormigueros, 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.