QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7Md

4 km N of Hatillo, Puerto Rico

· 4.0 km deep · released about 340 lb of TNT

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10 km30 km60 km120 km N Camuy Municipio 10 kmHatillo Municipio 10 kmQuebradillas Municipio 12 kmArecibo Municipio 19 kmIsabela Municipio 20 kmSan Sebastián Municipio 26 kmLares Municipio 28 kmBarceloneta Municipio 29 kmMoca 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 2.7 (Md)
Depth
4.0 km below the surface
Felt
no reports yet
Nearest
Camuy Municipio, 10 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3490 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 340 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 45,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 32,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.8× the energy of this one
  4. This earthquake M 2.7 about 340 lb of TNT

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 18.5249, -66.8283. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Camuy Municipio, PR 10 km (6 mi) NNE of here earthquakes near Camuy Municipio
Hatillo Municipio, PR 10 km (6 mi) NNW of here earthquakes near Hatillo Municipio
Quebradillas Municipio, PR 12 km (8 mi) ENE of here earthquakes near Quebradillas Municipio
Arecibo Municipio, PR 19 km (12 mi) WNW of here earthquakes near Arecibo Municipio
Isabela Municipio, PR 20 km (12 mi) ENE of here earthquakes near Isabela Municipio
San Sebastián Municipio, PR 26 km (16 mi) NE of here earthquakes near San Sebastián Municipio

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

Aftershocks so far

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

  1. 2.7 11 km NNE of Carrizales, Puerto Rico
  2. 2.6 5 km NE of San Germán, Puerto Rico
  3. 2.6 11 km N of Garrochales, Puerto Rico
  4. 2.9 8 km N of Quebradillas, Puerto Rico
  5. 2.0 10 km ESE of Maricao, Puerto Rico
  6. 2.8 Mona Passage
  7. 2.5 22 km N of Tierras Nuevas Poniente, Puerto Rico
  8. 2.7 12 km N of Carrizales, Puerto Rico
  9. 2.8 0 km ENE of Maricao, Puerto Rico
  10. 2.2 22 km NNE of Isabela, Puerto Rico
  11. 3.4 25 km NW of San Antonio, Puerto Rico
  12. 2.9 5 km NE of Quebradillas, Puerto Rico
  13. 2.2 9 km ESE of Maricao, Puerto Rico
  14. 2.1 3 km SW of La Playa, Puerto Rico
  15. 3.1 18 km NNE of Arecibo, 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

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