QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1Md

63 km W of Rincón, Puerto Rico

· 8.0 km deep · released about 1,300 lb of TNT

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10 km30 km60 km120 km N Mayagüez Municipio 19 kmRincón Municipio 63 kmAguada Municipio 71 kmAñasco Municipio 75 kmCabo Rojo Municipio 76 kmHormigueros Municipio 78 kmAguadilla Municipio 78 kmMoca Municipio 82 kmSan Germán Municipio 87 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 3.1 (Md)
Depth
8.0 km below the surface
Felt
no reports yet
Nearest
Mayagüez Municipio, 19 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3734 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 1,300 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 250,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 11,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 7,900× the energy of this one
  4. This earthquake M 3.1 about 1,300 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.4× 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 18.2500, -67.8444. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mayagüez Municipio, PR 19 km (12 mi) NNE of here earthquakes near Mayagüez Municipio
Rincón Municipio, PR 63 km (39 mi) W of here earthquakes near Rincón Municipio
Aguada Municipio, PR 71 km (44 mi) WSW of here earthquakes near Aguada Municipio
Añasco Municipio, PR 75 km (47 mi) W of here earthquakes near Añasco Municipio
Cabo Rojo Municipio, PR 76 km (47 mi) WNW of here earthquakes near Cabo Rojo Municipio
Hormigueros Municipio, PR 78 km (48 mi) W of here earthquakes near Hormigueros Municipio

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

Aftershocks so far

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

  1. 2.1 22 km WNW of Puerto Real, Puerto Rico
  2. 3.1 62 km SE of Punta Cana, Dominican Republic
  3. 3.0 79 km SE of Boca de Yuma, Dominican Republic
  4. 3.3 64 km SE of Punta Cana, Dominican Republic
  5. 2.8 31 km NW of Rincón, Puerto Rico
  6. 2.7 36 km WSW of Stella, Puerto Rico
  7. 3.8 53 km W of Rincón, Puerto Rico
  8. 2.8 29 km WNW of Puerto Real, Puerto Rico
  9. 2.5 36 km WNW of Rincón, Puerto Rico
  10. 3.1 68 km WSW of Stella, Puerto Rico
  11. 3.0 19 km WSW of Stella, Puerto Rico
  12. 2.2 40 km WNW of Rincón, Puerto Rico
  13. 2.4 66 km W of Stella, Puerto Rico
  14. 2.9 55 km WSW of Stella, Puerto Rico
  15. 3.2 63 km SE of Boca de Yuma, Dominican Republic

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.