QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

18 km SSW of Tallaboa, Puerto Rico

· 3.0 km deep · released about 11 lb of TNT

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10 km30 km60 km120 km N Guayanilla Municipio 19 kmPeñuelas Municipio 21 kmGuánica Municipio 22 kmPonce Municipio 24 kmYauco Municipio 30 kmJuana Díaz Municipio 33 kmLajas Municipio 34 kmSabana Grande Municipio 34 kmAdjuntas 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 1.7 (md)
Depth
3.0 km below the surface
Felt
no reports yet
Nearest
Guayanilla Municipio, 19 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2715 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 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 89× the energy of this one
  4. This earthquake M 1.7 about 11 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 17.8361, -66.7571. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guayanilla Municipio, PR 19 km (12 mi) SSE of here earthquakes near Guayanilla Municipio
Peñuelas Municipio, PR 21 km (13 mi) S of here earthquakes near Peñuelas Municipio
Guánica Municipio, PR 22 km (13 mi) SE of here earthquakes near Guánica Municipio
Ponce Municipio, PR 24 km (15 mi) SW of here earthquakes near Ponce Municipio
Yauco Municipio, PR 30 km (18 mi) SSE of here earthquakes near Yauco Municipio
Juana Díaz Municipio, PR 33 km (21 mi) WSW of here earthquakes near Juana Díaz Municipio

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

Aftershocks so far

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

  1. 2.5 15 km S of Potala Pastillo, Puerto Rico
  2. 2.1 6 km SE of Maricao, Puerto Rico
  3. 1.9 3 km ENE of Magas Arriba, Puerto Rico
  4. 1.5 10 km N of Yauco, Puerto Rico
  5. 1.9 19 km S of Tallaboa, Puerto Rico
  6. 1.8 18 km SSW of Guánica, Puerto Rico
  7. 2.1 1 km NW of Maricao, Puerto Rico
  8. 1.5 Puerto Rico region
  9. 1.5 1 km S of Jauca, Puerto Rico
  10. 1.7 3 km NNE of Río Cañas Abajo, Puerto Rico
  11. 1.9 6 km SW of Adjuntas, Puerto Rico
  12. 1.8 2 km SW of Pole Ojea, Puerto Rico
  13. 1.6 5 km ESE of Boquerón, Puerto Rico
  14. 1.8 10 km SSW of Guánica, Puerto Rico
  15. 1.8 4 km W of Capitanejo, 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.