QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4Md

54 km NW of Aguadilla, Puerto Rico

· 105 km deep · released about 1.9 tons of TNT

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10 km30 km60 km120 km N Aguadilla Municipio 52 kmRincón Municipio 55 kmAguada Municipio 56 kmIsabela Municipio 64 kmMoca Municipio 65 kmAñasco Municipio 68 kmQuebradillas Municipio 73 kmSan Sebastián Municipio 77 kmCamuy Municipio 80 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 3.4 (Md)
Depth
105 km below the surface
Felt
no reports yet
Nearest
Aguadilla Municipio, 52 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3504 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 1.9 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 89,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 4,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,800× the energy of this one
  4. This earthquake M 3.4 about 1.9 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 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 18.7415, -67.5569. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Aguadilla Municipio, PR 52 km (33 mi) NW of here earthquakes near Aguadilla Municipio
Rincón Municipio, PR 55 km (34 mi) NW of here earthquakes near Rincón Municipio
Aguada Municipio, PR 56 km (35 mi) NW of here earthquakes near Aguada Municipio
Isabela Municipio, PR 64 km (40 mi) WNW of here earthquakes near Isabela Municipio
Moca Municipio, PR 65 km (40 mi) NW of here earthquakes near Moca Municipio
Añasco Municipio, PR 68 km (42 mi) NW of here earthquakes near Añasco Municipio

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

Aftershocks so far

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

  1. 2.6 34 km NNW of San Antonio, Puerto Rico
  2. 2.1 39 km NW of Rincón, Puerto Rico
  3. 2.1 32 km WNW of Rincón, Puerto Rico
  4. 3.0 43 km WNW of Rincón, Puerto Rico
  5. 2.6 35 km NW of Rincón, Puerto Rico
  6. 2.7 33 km WNW of Rincón, Puerto Rico
  7. 3.2 84 km NE of Punta Cana, Dominican Republic
  8. 2.6 13 km WNW of Rincón, Puerto Rico
  9. 3.0 90 km NW of San Antonio, Puerto Rico
  10. 3.1 48 km NNW of San Antonio, Puerto Rico
  11. 1.9 11 km W of Rincón, Puerto Rico
  12. 2.1 9 km WNW of Rincón, Puerto Rico
  13. 3.3 52 km NNW of San Antonio, Puerto Rico
  14. 2.7 30 km NW of Rincón, Puerto Rico
  15. 3.2 36 km NNW 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.