QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

3 km N of Lluveras, Puerto Rico

· 20 km deep · released about 11 lb of TNT

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10 km30 km60 km120 km N Sabana Grande Municipio 5 kmYauco Municipio 5 kmMaricao Municipio 12 kmGuayanilla Municipio 13 kmGuánica Municipio 13 kmSan Germán Municipio 15 kmLajas Municipio 17 kmPeñuelas Municipio 19 kmLas Marías Municipio 19 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
20 km below the surface
Felt
no reports yet
Nearest
Sabana Grande Municipio, 5 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2706 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 5.7 970,000× the energy of this one
  3. Around the size people start to feel M 3.0 86× 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 18.0676, -66.9041. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sabana Grande Municipio, PR 5 km (3 mi) ESE of here earthquakes near Sabana Grande Municipio
Yauco Municipio, PR 5 km (3 mi) WSW of here earthquakes near Yauco Municipio
Maricao Municipio, PR 12 km (8 mi) SSE of here earthquakes near Maricao Municipio
Guayanilla Municipio, PR 13 km (8 mi) WNW of here earthquakes near Guayanilla Municipio
Guánica Municipio, PR 13 km (8 mi) N of here earthquakes near Guánica 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. 1.9 9 km ENE of Jayuya, Puerto Rico
  2. 2.0 4 km ENE of Las Marías, Puerto Rico
  3. 2.1 7 km SW of Mayagüez, Puerto Rico
  4. 2.2 7 km WSW of Mayagüez, Puerto Rico
  5. 2.5 15 km S of Potala Pastillo, Puerto Rico
  6. 2.3 2 km NE of Rincón, Puerto Rico
  7. 2.1 6 km SE of Maricao, Puerto Rico
  8. 2.8 20 km SW of Stella, Puerto Rico
  9. 1.9 3 km ENE of Magas Arriba, Puerto Rico
  10. 1.5 10 km N of Yauco, Puerto Rico
  11. 1.9 19 km S of Tallaboa, Puerto Rico
  12. 1.8 18 km SSW of Guánica, Puerto Rico
  13. 2.1 1 km NW of Maricao, Puerto Rico
  14. 1.5 Puerto Rico region
  15. 2.2 9 km WSW of Mayagüez, 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.