QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

5 km NW of Adjuntas, Puerto Rico

· 18 km deep · released about 11 lb of TNT

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10 km30 km60 km120 km N Adjuntas Municipio 1 kmUtuado Municipio 10 kmLares Municipio 15 kmYauco Municipio 16 kmJayuya Municipio 18 kmPeñuelas Municipio 19 kmMaricao Municipio 19 kmGuayanilla Municipio 21 kmSabana Grande Municipio 23 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
18 km below the surface
Felt
no reports yet
Nearest
Adjuntas Municipio, 1 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2707 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 18.1930, -66.7581. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Adjuntas Municipio, PR 1 km (1 mi) N of here earthquakes near Adjuntas Municipio
Utuado Municipio, PR 10 km (6 mi) SW of here earthquakes near Utuado Municipio
Lares Municipio, PR 15 km (9 mi) SE of here earthquakes near Lares Municipio
Yauco Municipio, PR 16 km (10 mi) NE of here earthquakes near Yauco Municipio
Jayuya Municipio, PR 18 km (11 mi) W of here earthquakes near Jayuya Municipio
Peñuelas Municipio, PR 19 km (12 mi) N of here earthquakes near Peñuelas Municipio

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

Aftershocks so far

51 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. 2.5 2 km E of Tierras Nuevas Poniente, Puerto Rico
  4. 2.1 7 km SW of Mayagüez, Puerto Rico
  5. 2.2 7 km WSW of Mayagüez, Puerto Rico
  6. 2.4 6 km NNE of Hatillo, Puerto Rico
  7. 1.7 10 km N of Hatillo, Puerto Rico
  8. 2.5 15 km S of Potala Pastillo, Puerto Rico
  9. 2.1 6 km SE of Maricao, Puerto Rico
  10. 1.9 3 km ENE of Magas Arriba, Puerto Rico
  11. 1.5 10 km N of Yauco, Puerto Rico
  12. 1.9 19 km S of Tallaboa, Puerto Rico
  13. 1.8 18 km SSW of Guánica, Puerto Rico
  14. 2.1 1 km NW of Maricao, Puerto Rico
  15. 1.5 Puerto Rico region

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

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