QuakeIndex

Earthquake · reviewed by a seismologist

M 3.5md

7 km N of Carrizales, Puerto Rico

· 85 km deep · released about 3.1 tons of TNT

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10 km30 km60 km120 km N Hatillo Municipio 12 kmCamuy Municipio 14 kmArecibo Municipio 17 kmQuebradillas Municipio 17 kmIsabela Municipio 25 kmBarceloneta Municipio 26 kmFlorida Municipio 31 kmSan Sebastián Municipio 31 kmLares Municipio 31 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 3.5 (md)
Depth
85 km below the surface
Felt
no reports yet
Measured shaking
intensity II (ShakeMap)
Nearest
Hatillo Municipio, 12 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1857 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 3.1 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.5 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 55,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 2,500× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,700× the energy of this one
  4. This earthquake M 3.5 about 3.1 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 6.5× 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 18.5480, -66.7860. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hatillo Municipio, PR 12 km (7 mi) N of here earthquakes near Hatillo Municipio
Camuy Municipio, PR 14 km (9 mi) NE of here earthquakes near Camuy Municipio
Arecibo Municipio, PR 17 km (11 mi) NW of here earthquakes near Arecibo Municipio
Quebradillas Municipio, PR 17 km (11 mi) ENE of here earthquakes near Quebradillas Municipio
Isabela Municipio, PR 25 km (16 mi) ENE of here earthquakes near Isabela Municipio
Barceloneta Municipio, PR 26 km (16 mi) WNW of here earthquakes near Barceloneta Municipio

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

Aftershocks so far

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

  1. 2.6 5 km SSW of Adjuntas, Puerto Rico
  2. 2.7 5 km SSW of Adjuntas, Puerto Rico
  3. 3.0 5 km N of Santo Domingo, Puerto Rico
  4. 2.4 5 km SW of Adjuntas, Puerto Rico
  5. 2.4 19 km N of Quebradillas, Puerto Rico
  6. 3.3 26 km N of Hatillo, Puerto Rico
  7. 3.0 15 km NNE of Carrizales, Puerto Rico
  8. 3.3 7 km N of Camuy, Puerto Rico
  9. 2.3 2 km SSE of Maricao, Puerto Rico
  10. 3.1 11 km NNE of San Antonio, Puerto Rico
  11. 3.2 8 km SSE of Lares, Puerto Rico
  12. 3.0 35 km N of Tierras Nuevas Poniente, Puerto Rico
  13. 3.0 Puerto Rico region
  14. 2.5 6 km SW of Las Marías, Puerto Rico
  15. 3.4 22 km NNE of Isabela, 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.