QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

10 km S of Guánica, Puerto Rico

· 4.0 km deep · released about 11 lb of TNT

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10 km30 km60 km120 km N Guánica Municipio 8 kmLajas Municipio 17 kmGuayanilla Municipio 20 kmSabana Grande Municipio 23 kmYauco Municipio 24 kmPeñuelas Municipio 27 kmSan Germán Municipio 28 kmCabo Rojo Municipio 30 kmMaricao Municipio 33 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
4.0 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 8 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2750 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 1,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 930,000× the energy of this one
  3. Around the size people start to feel M 3.0 83× 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 17.8755, -66.9273. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 8 km (5 mi) S of here earthquakes near Guánica Municipio
Lajas Municipio, PR 17 km (10 mi) SE of here earthquakes near Lajas Municipio
Guayanilla Municipio, PR 20 km (12 mi) SW of here earthquakes near Guayanilla Municipio
Sabana Grande Municipio, PR 23 km (15 mi) S of here earthquakes near Sabana Grande Municipio
Yauco Municipio, PR 24 km (15 mi) SSW of here earthquakes near Yauco Municipio
Peñuelas Municipio, PR 27 km (17 mi) SW of here earthquakes near Peñuelas 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. 1.9 1 km ENE of Hormigueros, Puerto Rico
  2. 1.8 3 km SW of Las Marías, Puerto Rico
  3. 2.1 0 km SW of Lajas, Puerto Rico
  4. 1.7 2 km NNE of Yauco, Puerto Rico
  5. 1.8 2 km N of Yauco, Puerto Rico
  6. 1.6 5 km SW of La Parguera, Puerto Rico
  7. 1.7 3 km S of Las Marías, Puerto Rico
  8. 1.5 14 km SSW of Guánica, Puerto Rico
  9. 1.8 6 km WNW of Puerto Real, Puerto Rico
  10. 1.8 2 km NW of Sabana Grande, Puerto Rico
  11. 1.7 1 km NNW of Lajas, Puerto Rico
  12. 1.6 2 km SSW of Palmarejo, Puerto Rico
  13. 2.1 15 km SSW of Guánica, Puerto Rico
  14. 1.9 18 km SSW of Santa Isabel, Puerto Rico
  15. 1.5 2 km S of La Parguera, 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.