QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

3 km SSE of Utuado, Puerto Rico

· 5.0 km deep · released about 6.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Utuado Municipio 4 kmAdjuntas Municipio 9 kmJayuya Municipio 11 kmLares Municipio 19 kmCiales Municipio 20 kmFlorida Municipio 20 kmArecibo Municipio 22 kmPeñuelas Municipio 23 kmYauco 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 1.6 (md)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Utuado Municipio, 4 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2521 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 6.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.6 about 6.4 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 18.2323, -66.6916. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Utuado Municipio, PR 4 km (3 mi) SSE of here earthquakes near Utuado Municipio
Adjuntas Municipio, PR 9 km (6 mi) NE of here earthquakes near Adjuntas Municipio
Jayuya Municipio, PR 11 km (7 mi) WNW of here earthquakes near Jayuya Municipio
Lares Municipio, PR 19 km (12 mi) ESE of here earthquakes near Lares Municipio
Ciales Municipio, PR 20 km (12 mi) WSW of here earthquakes near Ciales Municipio
Florida Municipio, PR 20 km (13 mi) SW of here earthquakes near Florida Municipio

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

Aftershocks so far

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

  1. 1.9 12 km SSE of Ponce, Puerto Rico
  2. 2.0 6 km NNE of Sabana Grande, Puerto Rico
  3. 2.1 12 km SSE of Ponce, Puerto Rico
  4. 2.3 9 km SSW of Potala Pastillo, Puerto Rico
  5. 1.9 4 km ENE of Hormigueros, Puerto Rico
  6. 1.8 13 km S of Ponce, Puerto Rico
  7. 1.8 1 km S of Guayanilla, Puerto Rico
  8. 2.8 7 km NNE of Hatillo, Puerto Rico
  9. 1.9 1 km ENE of Sabana Grande, Puerto Rico
  10. 2.1 0 km NNW of Mariano Colón, Puerto Rico
  11. 2.3 3 km WNW of Hormigueros, Puerto Rico
  12. 2.6 3 km SE of Jayuya, Puerto Rico
  13. 2.0 3 km SSE of Palmarejo, Puerto Rico
  14. 1.8 Puerto Rico region
  15. 1.6 3 km NNE of Ponce, 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.