QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2md

2 km ESE of Mucarabones, Puerto Rico

· 114 km deep · released about 1,700 lb of TNT

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10 km30 km60 km120 km N Bayamón Municipio 4 kmToa Alta Municipio 6 kmCataño Municipio 8 kmToa Baja Municipio 8 kmGuaynabo Municipio 9 kmNaranjito Municipio 12 kmDorado Municipio 13 kmSan Juan Municipio 13 kmAguas Buenas Municipio 15 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 3.2 (md)
Depth
114 km below the surface
Felt
no reports yet
Nearest
Bayamón Municipio, 4 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1490 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 1,700 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 200,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 9,100× the energy of this one
  3. Magna, Utah 2020 M 5.7 6,500× the energy of this one
  4. This earthquake M 3.2 about 1,700 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.7× more

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 18.3822, -66.1897. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Bayamón Municipio, PR 4 km (3 mi) NNW of here earthquakes near Bayamón Municipio
Toa Alta Municipio, PR 6 km (4 mi) ENE of here earthquakes near Toa Alta Municipio
Cataño Municipio, PR 8 km (5 mi) SSW of here earthquakes near Cataño Municipio
Toa Baja Municipio, PR 8 km (5 mi) S of here earthquakes near Toa Baja Municipio
Guaynabo Municipio, PR 9 km (6 mi) WNW of here earthquakes near Guaynabo Municipio
Naranjito Municipio, PR 12 km (8 mi) NNE of here earthquakes near Naranjito Municipio

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

Aftershocks so far

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

  1. 3.0 11 km NNW of Brenas, Puerto Rico
  2. 2.8 5 km NNW of Dorado, Puerto Rico
  3. 2.2 3 km N of Orocovis, Puerto Rico
  4. 2.3 3 km ESE of Salinas, Puerto Rico
  5. 3.6 1 km NNW of San José, Puerto Rico
  6. 3.0 3 km ESE of Cayey, Puerto Rico
  7. 3.0 3 km E of Cayey, Puerto Rico
  8. 1.8 2 km SW of G. L. Garcia, Puerto Rico
  9. 2.1 3 km ENE of Mariano Colón, Puerto Rico
  10. 2.5 6 km NNW of Los Llanos, Puerto Rico
  11. 2.7 4 km SE of Morovis, Puerto Rico
  12. 3.1 1 km E of Salinas, Puerto Rico
  13. 3.8 5 km ENE of San Juan, Puerto Rico
  14. 2.2 Puerto Rico region
  15. 2.6 2 km ENE of Bayamon, 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.