QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1Md

37 km WNW of Rincón, Puerto Rico

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

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10 km30 km60 km120 km N Rincón Municipio 38 kmAguada Municipio 42 kmAguadilla Municipio 44 kmAñasco Municipio 52 kmMoca Municipio 53 kmIsabela Municipio 58 kmMayagüez Municipio 58 kmHormigueros Municipio 63 kmSan Sebastián Municipio 66 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
17 km below the surface
Felt
no reports yet
Nearest
Rincón Municipio, 38 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3701 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 18.5088, -67.5625. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Rincón Municipio, PR 38 km (24 mi) WNW of here earthquakes near Rincón Municipio
Aguada Municipio, PR 42 km (26 mi) WNW of here earthquakes near Aguada Municipio
Aguadilla Municipio, PR 44 km (28 mi) W of here earthquakes near Aguadilla Municipio
Añasco Municipio, PR 52 km (32 mi) WNW of here earthquakes near Añasco Municipio
Moca Municipio, PR 53 km (33 mi) WNW of here earthquakes near Moca Municipio
Isabela Municipio, PR 58 km (36 mi) W of here earthquakes near Isabela Municipio

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

Aftershocks so far

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

  1. 2.8 29 km WNW of Puerto Real, Puerto Rico
  2. 2.8 1 km NW of Las Marias, Puerto Rico
  3. 2.5 36 km WNW of Rincón, Puerto Rico
  4. 3.1 61 km NW of San Antonio, Puerto Rico
  5. 2.8 65 km NW of San Antonio, Puerto Rico
  6. 3.1 68 km WSW of Stella, Puerto Rico
  7. 2.0 22 km W of Puerto Real, Puerto Rico
  8. 2.8 53 km NW of Rincón, Puerto Rico
  9. 3.0 19 km WSW of Stella, Puerto Rico
  10. 2.2 40 km WNW of Rincón, Puerto Rico
  11. 2.4 41 km NNW of San Antonio, Puerto Rico
  12. 1.7 14 km NW of Puerto Real, Puerto Rico
  13. 2.4 66 km W of Stella, Puerto Rico
  14. 2.8 Mona Passage
  15. 2.8 50 km NW of San Antonio, 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.