QuakeIndex

Earthquake · reviewed by a seismologist

M 3.7Md

6 km NE of Carrizales, Puerto Rico

· 89 km deep · released about 5.4 tons of TNT

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10 km30 km60 km120 km N Hatillo Municipio 10 kmArecibo Municipio 13 kmCamuy Municipio 15 kmQuebradillas Municipio 19 kmBarceloneta Municipio 21 kmFlorida Municipio 27 kmIsabela Municipio 28 kmUtuado Municipio 29 kmManatí Municipio 29 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 3.7 (Md)
Depth
89 km below the surface
Felt
no reports yet
Tsunami
USGS flagged this event for tsunami evaluation. Follow tsunami.gov for official messages.
Nearest
Hatillo Municipio, 10 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3672 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 5.4 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.7 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 32,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 1,400× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,000× the energy of this one
  4. This earthquake M 3.7 about 5.4 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 11× 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 18.5244, -66.7533. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hatillo Municipio, PR 10 km (6 mi) NNE of here earthquakes near Hatillo Municipio
Arecibo Municipio, PR 13 km (8 mi) NW of here earthquakes near Arecibo Municipio
Camuy Municipio, PR 15 km (9 mi) NE of here earthquakes near Camuy Municipio
Quebradillas Municipio, PR 19 km (12 mi) ENE of here earthquakes near Quebradillas Municipio
Barceloneta Municipio, PR 21 km (13 mi) WNW of here earthquakes near Barceloneta Municipio
Florida Municipio, PR 27 km (16 mi) NW of here earthquakes near Florida Municipio

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

Aftershocks so far

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

  1. 2.6 16 km NNE of Carrizales, Puerto Rico
  2. 1.7 5 km N of Santo Domingo, Puerto Rico
  3. 3.0 1 km SE of Vega Alta, Puerto Rico
  4. 2.0 8 km WNW of Adjuntas, Puerto Rico
  5. 2.5 3 km S of San Antonio, Puerto Rico
  6. 1.9 6 km WNW of Adjuntas, Puerto Rico
  7. 2.3 13 km N of Brenas, Puerto Rico
  8. 2.5 4 km NNE of Coto Norte, Puerto Rico
  9. 1.6 9 km ENE of Sabana Grande, Puerto Rico
  10. 1.9 0 km SSE of Las Marias, Puerto Rico
  11. 2.7 42 km N of Hatillo, Puerto Rico
  12. 1.7 1 km WSW of San Sebastián, Puerto Rico
  13. 2.7 13 km NNW of Isabela, Puerto Rico
  14. 2.6 23 km NNW of Tierras Nuevas Poniente, Puerto Rico
  15. 2.6 5 km W of Cayuco, 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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