QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

1 km NW of Parcelas Peñuelas, Puerto Rico

· 10 km deep · released about 11 lb of TNT

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10 km30 km60 km120 km N Santa Isabel Municipio 8 kmCoamo Municipio 10 kmSalinas Municipio 11 kmJuana Díaz Municipio 15 kmAibonito Municipio 16 kmVillalba Municipio 18 kmBarranquitas Municipio 21 kmGuayama Municipio 23 kmCayey Municipio 24 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
10 km below the surface
Felt
no reports yet
Nearest
Santa Isabel Municipio, 8 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2766 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 1,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 89× 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 18.0125, -66.3535. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Santa Isabel Municipio, PR 8 km (5 mi) NNE of here earthquakes near Santa Isabel Municipio
Coamo Municipio, PR 10 km (6 mi) S of here earthquakes near Coamo Municipio
Salinas Municipio, PR 11 km (7 mi) WNW of here earthquakes near Salinas Municipio
Juana Díaz Municipio, PR 15 km (9 mi) E of here earthquakes near Juana Díaz Municipio
Aibonito Municipio, PR 16 km (10 mi) SW of here earthquakes near Aibonito Municipio
Villalba Municipio, PR 18 km (11 mi) SE of here earthquakes near Villalba Municipio

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

Aftershocks so far

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

  1. 2.1 1 km S of Adjuntas, Puerto Rico
  2. 2.1 1 km S of Adjuntas, Puerto Rico
  3. 1.7 0 km NNW of Jobos, Puerto Rico
  4. 1.6 2 km E of Jobos, Puerto Rico
  5. 1.7 3 km SE of Jauca, Puerto Rico
  6. 1.7 8 km SSW of Arroyo, Puerto Rico
  7. 1.7 2 km N of Jobos, Puerto Rico
  8. 1.9 10 km SSE of Arroyo, Puerto Rico
  9. 1.6 1 km ENE of Jobos, Puerto Rico
  10. 1.7 1 km SSW of Jobos, Puerto Rico
  11. 1.7 1 km NE of Jobos, Puerto Rico
  12. 1.6 0 km E of Jobos, Puerto Rico
  13. 2.0 0 km ESE of Jobos, Puerto Rico
  14. 1.8 1 km E of Jobos, Puerto Rico
  15. 1.6 3 km E of La Plena, 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.