QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9Md

Puerto Rico region

· 105 km deep · released about 680 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cataño Municipio 4 kmToa Baja Municipio 5 kmBayamón Municipio 7 kmToa Alta Municipio 9 kmGuaynabo Municipio 10 kmSan Juan Municipio 11 kmDorado Municipio 11 kmNaranjito Municipio 16 kmVega Alta Municipio 17 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 2.9 (Md)
Depth
105 km below the surface
Felt
no reports yet
Nearest
Cataño Municipio, 4 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3413 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 680 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 22,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 16,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.4× the energy of this one
  4. This earthquake M 2.9 about 680 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 18.4137, -66.1745. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cataño Municipio, PR 4 km (3 mi) SW of here earthquakes near Cataño Municipio
Toa Baja Municipio, PR 5 km (3 mi) SSE of here earthquakes near Toa Baja Municipio
Bayamón Municipio, PR 7 km (4 mi) N of here earthquakes near Bayamón Municipio
Toa Alta Municipio, PR 9 km (6 mi) NE of here earthquakes near Toa Alta Municipio
Guaynabo Municipio, PR 10 km (6 mi) NW of here earthquakes near Guaynabo Municipio
San Juan Municipio, PR 11 km (7 mi) W of here earthquakes near San Juan Municipio

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

Aftershocks so far

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

  1. 2.3 0 km N of Pastos, Puerto Rico
  2. 2.6 27 km NNW of Loíza, Puerto Rico
  3. 3.1 1 km SW of San Antonio, Puerto Rico
  4. 2.7 2 km WSW of Río Lajas, Puerto Rico
  5. 2.3 5 km NNW of Brenas, Puerto Rico
  6. 2.8 4 km WNW of San Juan, Puerto Rico
  7. 3.4 2 km NNE of Barahona, Puerto Rico
  8. 2.5 2 km WNW of Parcelas Nuevas, Puerto Rico
  9. 2.4 3 km SW of Río Lajas, Puerto Rico
  10. 3.0 4 km ENE of Guaynabo, Puerto Rico
  11. 1.8 0 km NNE of Ciales, Puerto Rico
  12. 2.6 6 km ENE of Tierras Nuevas Poniente, Puerto Rico
  13. 2.8 10 km NNE of Dorado, Puerto Rico
  14. 2.7 3 km SE of Pájaros, Puerto Rico
  15. 1.8 4 km SE of G. L. Garcia, 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.