QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1md

32 km W of Rincón, Puerto Rico

· 14 km deep · released about 1,200 lb of TNT

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10 km30 km60 km120 km N Rincón Municipio 32 kmAguada Municipio 40 kmMayagüez Municipio 43 kmAñasco Municipio 45 kmAguadilla Municipio 47 kmHormigueros Municipio 51 kmMoca Municipio 51 kmCabo Rojo Municipio 53 kmSan Germán Municipio 59 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
14 km below the surface
Felt
no reports yet
Nearest
Rincón Municipio, 32 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 349 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 1,200 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 6.7 280,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 12,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 8,800× the energy of this one
  4. This earthquake M 3.1 about 1,200 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.3× 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 18.3127, -67.5573. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Rincón Municipio, PR 32 km (20 mi) W of here earthquakes near Rincón Municipio
Aguada Municipio, PR 40 km (25 mi) W of here earthquakes near Aguada Municipio
Mayagüez Municipio, PR 43 km (27 mi) NE of here earthquakes near Mayagüez Municipio
Añasco Municipio, PR 45 km (28 mi) W of here earthquakes near Añasco Municipio
Aguadilla Municipio, PR 47 km (29 mi) WSW of here earthquakes near Aguadilla Municipio
Hormigueros Municipio, PR 51 km (31 mi) WNW of here earthquakes near Hormigueros Municipio

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

Aftershocks so far

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

  1. 3.4 52 km W of Puerto Real, Puerto Rico
  2. 2.3 10 km W of Puerto Real, Puerto Rico
  3. 2.5 20 km W of Rincón, Puerto Rico
  4. 3.3 32 km WNW of Rincón, Puerto Rico
  5. 2.5 2 km NNW of Las Marias, Puerto Rico
  6. 2.4 12 km SW of La Playa, Puerto Rico
  7. 2.4 2 km N of La Playa, Puerto Rico
  8. 2.7 1 km SSW of Mayagüez, Puerto Rico
  9. 2.3 18 km NW of Puerto Real, Puerto Rico
  10. 2.9 30 km W of Rincón, Puerto Rico
  11. 2.1 4 km S of Espino, Puerto Rico
  12. 3.1 29 km WNW of San Antonio, Puerto Rico
  13. 2.7 25 km NW of Rincón, Puerto Rico
  14. 3.4 65 km NW of Rincón, Puerto Rico
  15. 3.3 17 km SW of Stella, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.4 on 2017-10-01 — it released about 99 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.