QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

6 km NW of Adjuntas, Puerto Rico

· 14 km deep · released about 19 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Adjuntas Municipio 3 kmUtuado Municipio 9 kmLares Municipio 14 kmYauco Municipio 17 kmJayuya Municipio 19 kmMaricao Municipio 19 kmPeñuelas Municipio 20 kmGuayanilla Municipio 23 kmLas Marías 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 1.9 (md)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Adjuntas Municipio, 3 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2637 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 19 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 790,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 560,000× the energy of this one
  3. Around the size people start to feel M 3.0 50× the energy of this one
  4. This earthquake M 1.9 about 19 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 18.2078, -66.7620. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Adjuntas Municipio, PR 3 km (2 mi) N of here earthquakes near Adjuntas Municipio
Utuado Municipio, PR 9 km (6 mi) SW of here earthquakes near Utuado Municipio
Lares Municipio, PR 14 km (9 mi) SE of here earthquakes near Lares Municipio
Yauco Municipio, PR 17 km (11 mi) NE of here earthquakes near Yauco Municipio
Jayuya Municipio, PR 19 km (11 mi) W of here earthquakes near Jayuya Municipio
Maricao Municipio, PR 19 km (12 mi) ENE of here earthquakes near Maricao Municipio

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

Aftershocks so far

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

  1. 2.5 17 km N of Arecibo, Puerto Rico
  2. 2.1 4 km SW of Añasco, Puerto Rico
  3. 2.0 7 km W of Mayagüez, Puerto Rico
  4. 1.5 10 km SSE of Ponce, Puerto Rico
  5. 2.4 9 km N of Quebradillas, Puerto Rico
  6. 1.5 13 km SSE of Ponce, Puerto Rico
  7. 1.6 12 km SSE of Ponce, Puerto Rico
  8. 2.3 5 km ENE of La Parguera, Puerto Rico
  9. 1.7 1 km NE of Liborio Negron Torres, Puerto Rico
  10. 2.0 4 km NNE of Sabana Grande, Puerto Rico
  11. 2.0 5 km WSW of Rafael Gonzalez, Puerto Rico
  12. 1.9 4 km SSW of Indios, Puerto Rico
  13. 2.1 6 km E of Espino, Puerto Rico
  14. 1.7 3 km N of Orocovis, Puerto Rico
  15. 2.3 8 km NNE of Hatillo, 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.