QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1Md

15 km NNE of Carrizales, Puerto Rico

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

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10 km30 km60 km120 km N Hatillo Municipio 20 kmArecibo Municipio 21 kmCamuy Municipio 23 kmBarceloneta Municipio 24 kmQuebradillas Municipio 26 kmManatí Municipio 32 kmFlorida Municipio 33 kmIsabela Municipio 33 kmUtuado Municipio 38 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
75 km below the surface
Felt
no reports yet
Nearest
Hatillo Municipio, 20 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3686 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 18.6128, -66.7350. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hatillo Municipio, PR 20 km (13 mi) NNE of here earthquakes near Hatillo Municipio
Arecibo Municipio, PR 21 km (13 mi) NNW of here earthquakes near Arecibo Municipio
Camuy Municipio, PR 23 km (14 mi) NE of here earthquakes near Camuy Municipio
Barceloneta Municipio, PR 24 km (15 mi) NW of here earthquakes near Barceloneta Municipio
Quebradillas Municipio, PR 26 km (16 mi) NE of here earthquakes near Quebradillas Municipio
Manatí Municipio, PR 32 km (20 mi) NW of here earthquakes near Manatí Municipio

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

Aftershocks so far

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

  1. 2.8 55 km N of Hatillo, Puerto Rico
  2. 2.5 48 km N of Carrizales, Puerto Rico
  3. 1.6 7 km NE of Maricao, Puerto Rico
  4. 2.8 11 km NNE of Quebradillas, Puerto Rico
  5. 2.5 4 km NW of Quebradillas, Puerto Rico
  6. 2.1 8 km E of Jayuya, Puerto Rico
  7. 2.9 60 km N of Hatillo, Puerto Rico
  8. 2.7 54 km N of Hatillo, Puerto Rico
  9. 2.4 37 km N of Hatillo, Puerto Rico
  10. 2.3 19 km NNE of Isabela, Puerto Rico
  11. 3.3 8 km NNE of Brenas, Puerto Rico
  12. 2.5 0 km S of Tierras Nuevas Poniente, Puerto Rico
  13. 2.4 17 km N of Carrizales, Puerto Rico
  14. 3.0 4 km E of Rafael Gonzalez, Puerto Rico
  15. 3.7 6 km NE of Carrizales, 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.