QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

4 km W of Aguas Buenas, Puerto Rico

· 38 km deep · released about 77 lb of TNT

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10 km30 km60 km120 km N Aguas Buenas Municipio 2 kmComerío Municipio 9 kmCidra Municipio 9 kmGuaynabo Municipio 10 kmBayamón Municipio 11 kmCaguas Municipio 11 kmNaranjito Municipio 12 kmToa Alta Municipio 16 kmTrujillo Alto Municipio 17 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
38 km below the surface
Felt
no reports yet
Nearest
Aguas Buenas Municipio, 2 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1610 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 77 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 5.8 200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 140,000× the energy of this one
  3. Around the size people start to feel M 3.0 12× the energy of this one
  4. This earthquake M 2.3 about 77 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 18.2578, -66.1440. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Aguas Buenas Municipio, PR 2 km (1 mi) W of here earthquakes near Aguas Buenas Municipio
Comerío Municipio, PR 9 km (5 mi) ENE of here earthquakes near Comerío Municipio
Cidra Municipio, PR 9 km (6 mi) NNE of here earthquakes near Cidra Municipio
Guaynabo Municipio, PR 10 km (6 mi) SSW of here earthquakes near Guaynabo Municipio
Bayamón Municipio, PR 11 km (7 mi) SSE of here earthquakes near Bayamón Municipio
Caguas Municipio, PR 11 km (7 mi) WNW of here earthquakes near Caguas Municipio

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

Aftershocks so far

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

  1. 3.1 9 km S of Jobos, Puerto Rico
  2. 3.4 16 km SSE of Central Aguirre, Puerto Rico
  3. 2.6 5 km WNW of Jagual, Puerto Rico
  4. 2.4 6 km ESE of Villalba, Puerto Rico
  5. 3.7 2 km ESE of Tierras Nuevas Poniente, Puerto Rico
  6. 2.1 4 km SSE of Cayey, Puerto Rico
  7. 3.2 18 km N of Suárez, Puerto Rico
  8. 2.5 2 km SW of San Antonio, Puerto Rico
  9. 3.0 8 km NNW of Dorado, Puerto Rico
  10. 3.3 1 km SE of Toa Baja, Puerto Rico
  11. 2.4 7 km SSE of Jobos, Puerto Rico
  12. 2.8 2 km SE of Jobos, Puerto Rico
  13. 2.0 5 km ESE of Jobos, Puerto Rico
  14. 2.5 8 km SSW of Salinas, Puerto Rico
  15. 2.1 3 km SSE of Jobos, 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 4.6 on 2016-12-05 — it released about 3,100 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.