QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

7 km SSW of Indios, Puerto Rico

· 3.0 km deep · released about 9.3 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guánica Municipio 9 kmGuayanilla Municipio 9 kmPeñuelas Municipio 16 kmYauco Municipio 18 kmSabana Grande Municipio 21 kmLajas Municipio 22 kmPonce Municipio 26 kmSan Germán Municipio 29 kmMaricao Municipio 29 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
Guánica Municipio, 9 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3170 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 9.3 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 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 100× the energy of this one
  4. This earthquake M 1.7 about 9.3 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 17.9281, -66.8363. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 9 km (6 mi) ESE of here earthquakes near Guánica Municipio
Guayanilla Municipio, PR 9 km (6 mi) SSW of here earthquakes near Guayanilla Municipio
Peñuelas Municipio, PR 16 km (10 mi) SW of here earthquakes near Peñuelas Municipio
Yauco Municipio, PR 18 km (11 mi) S of here earthquakes near Yauco Municipio
Sabana Grande Municipio, PR 21 km (13 mi) SE of here earthquakes near Sabana Grande Municipio
Lajas Municipio, PR 22 km (14 mi) ESE of here earthquakes near Lajas Municipio

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

Aftershocks so far

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

  1. 2.4 12 km S of Ponce, Puerto Rico
  2. 2.1 10 km SE of Pole Ojea, Puerto Rico
  3. 1.5 1 km SE of La Parguera, Puerto Rico
  4. 1.6 7 km SW of Puerto Real, Puerto Rico
  5. 1.7 0 km ESE of La Parguera, Puerto Rico
  6. 2.0 9 km S of Tallaboa, Puerto Rico
  7. 2.2 6 km SW of Tallaboa, Puerto Rico
  8. 1.7 9 km SSW of Tallaboa, Puerto Rico
  9. 2.2 9 km SSW of Tallaboa, Puerto Rico
  10. 2.2 15 km SSW of Guánica, Puerto Rico
  11. 2.2 4 km NW of Maricao, Puerto Rico
  12. 2.2 13 km SSW of Guánica, Puerto Rico
  13. 2.2 12 km S of Ponce, Puerto Rico
  14. 1.9 6 km SSW of Guánica, Puerto Rico
  15. 2.0 4 km ENE 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.