QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1md

57 km WNW of Rincón, Puerto Rico

· 84 km deep · released about 1,600 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mayagüez Municipio 46 kmRincón Municipio 58 kmAguada Municipio 63 kmAguadilla Municipio 66 kmAñasco Municipio 71 kmMoca Municipio 74 kmHormigueros Municipio 80 kmIsabela Municipio 80 kmCabo Rojo Municipio 83 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
84 km below the surface
Felt
no reports yet
Nearest
Mayagüez Municipio, 46 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1907 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 1,600 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 6.7 210,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 9,400× the energy of this one
  3. Magna, Utah 2020 M 5.7 6,700× the energy of this one
  4. This earthquake M 3.1 about 1,600 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 18.4873, -67.7736. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mayagüez Municipio, PR 46 km (29 mi) NNE of here earthquakes near Mayagüez Municipio
Rincón Municipio, PR 58 km (36 mi) WNW of here earthquakes near Rincón Municipio
Aguada Municipio, PR 63 km (39 mi) WNW of here earthquakes near Aguada Municipio
Aguadilla Municipio, PR 66 km (41 mi) W of here earthquakes near Aguadilla Municipio
Añasco Municipio, PR 71 km (44 mi) WNW of here earthquakes near Añasco Municipio
Moca Municipio, PR 74 km (46 mi) W of here earthquakes near Moca Municipio

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

Aftershocks so far

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

  1. 3.3 39 km W of Rincón, Puerto Rico
  2. 3.4 75 km NW of Aguadilla, Puerto Rico
  3. 3.5 Mona Passage
  4. 2.8 49 km W of Stella, Puerto Rico
  5. 3.3 61 km SE of Punta Cana, Dominican Republic
  6. 2.8 25 km SW of Stella, Puerto Rico
  7. 3.2 41 km WSW of Stella, Puerto Rico
  8. 3.7 59 km SE of Punta Cana, Dominican Republic
  9. 2.6 35 km WSW of Stella, Puerto Rico
  10. 3.4 59 km NW of San Antonio, Puerto Rico
  11. 3.4 63 km W of Rincón, Puerto Rico
  12. 3.1 45 km NW of Aguadilla, Puerto Rico
  13. 3.6 59 km W of Rincón, Puerto Rico
  14. 3.6 57 km NE of Punta Cana, Dominican Republic
  15. 3.3 46 km WSW 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 75 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.