QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

1 km NW of Lluveras, Puerto Rico

· 22 km deep · released about 12 lb of TNT

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10 km30 km60 km120 km N Sabana Grande Municipio 5 kmYauco Municipio 7 kmGuánica Municipio 11 kmGuayanilla Municipio 13 kmMaricao Municipio 14 kmSan Germán Municipio 15 kmLajas Municipio 16 kmPeñuelas Municipio 20 kmLas Marías Municipio 21 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
22 km below the surface
Felt
no reports yet
Nearest
Sabana Grande Municipio, 5 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3045 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 12 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 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 870,000× the energy of this one
  3. Around the size people start to feel M 3.0 78× the energy of this one
  4. This earthquake M 1.7 about 12 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 18.0508, -66.9135. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sabana Grande Municipio, PR 5 km (3 mi) SE of here earthquakes near Sabana Grande Municipio
Yauco Municipio, PR 7 km (4 mi) WSW of here earthquakes near Yauco Municipio
Guánica Municipio, PR 11 km (7 mi) N of here earthquakes near Guánica Municipio
Guayanilla Municipio, PR 13 km (8 mi) WNW of here earthquakes near Guayanilla Municipio
Maricao Municipio, PR 14 km (9 mi) S of here earthquakes near Maricao Municipio
San Germán Municipio, PR 15 km (9 mi) ESE of here earthquakes near San Germán Municipio

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

Aftershocks so far

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

  1. 2.0 4 km ENE of La Parguera, Puerto Rico
  2. 2.0 4 km ESE of Maria Antonia, Puerto Rico
  3. 1.6 2 km S of Boquerón, Puerto Rico
  4. 2.0 22 km S of Guánica, Puerto Rico
  5. 1.8 4 km SSE of Cabo Rojo, Puerto Rico
  6. 1.9 4 km SE of Espino, Puerto Rico
  7. 2.4 14 km S of Tallaboa, Puerto Rico
  8. 2.7 3 km NE of Mayagüez, Puerto Rico
  9. 2.0 5 km SW of Las Marías, Puerto Rico
  10. 1.6 1 km SW of Adjuntas, Puerto Rico
  11. 1.9 0 km SE of Adjuntas, Puerto Rico
  12. 1.9 1 km NE of Adjuntas, Puerto Rico
  13. 1.8 6 km SW of Mayagüez, Puerto Rico
  14. 1.8 1 km SSW of Adjuntas, Puerto Rico
  15. 2.5 2 km S of Adjuntas, 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.