QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

20 km N of Garrochales, Puerto Rico

· 8.0 km deep · released about 85 lb of TNT

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10 km30 km60 km120 km N Barceloneta Municipio 19 kmManatí Municipio 23 kmArecibo Municipio 26 kmVega Baja Municipio 27 kmFlorida Municipio 30 kmHatillo Municipio 33 kmVega Alta Municipio 33 kmDorado Municipio 37 kmCamuy 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 2.3 (md)
Depth
8.0 km below the surface
Felt
no reports yet
Nearest
Barceloneta Municipio, 19 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2993 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 85 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 180,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 11× the energy of this one
  4. This earthquake M 2.3 about 85 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 18.6408, -66.5655. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Barceloneta Municipio, PR 19 km (12 mi) N of here earthquakes near Barceloneta Municipio
Manatí Municipio, PR 23 km (14 mi) NNW of here earthquakes near Manatí Municipio
Arecibo Municipio, PR 26 km (16 mi) NNE of here earthquakes near Arecibo Municipio
Vega Baja Municipio, PR 27 km (17 mi) NW of here earthquakes near Vega Baja Municipio
Florida Municipio, PR 30 km (19 mi) N of here earthquakes near Florida Municipio
Hatillo Municipio, PR 33 km (21 mi) NE of here earthquakes near Hatillo Municipio

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

Aftershocks so far

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

  1. 2.5 6 km NNE of Carrizales, Puerto Rico
  2. 2.3 36 km N of Dorado, Puerto Rico
  3. 2.1 0 km NE of Ciales, Puerto Rico
  4. 2.5 4 km E of Isabela, Puerto Rico
  5. 2.7 10 km NNE of Isabela, Puerto Rico
  6. 2.8 4 km NNW of Sabana, Puerto Rico
  7. 2.8 1 km NW of Naranjito, Puerto Rico
  8. 2.5 2 km ESE of Vega Alta, Puerto Rico
  9. 1.7 8 km S of Villalba, Puerto Rico
  10. 2.7 4 km ESE of Florida, Puerto Rico
  11. 2.2 11 km N of Arecibo, Puerto Rico
  12. 2.5 19 km N of Arecibo, Puerto Rico
  13. 2.9 43 km N of Isabela, Puerto Rico
  14. 2.8 31 km N of Tierras Nuevas Poniente, Puerto Rico
  15. 2.5 23 km N 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.8 on 2017-08-18 — it released about 5,600 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.