QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

2 km E of Central Aguirre, Puerto Rico

· 9.1 km deep · released about 77 lb of TNT

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10 km30 km60 km120 km N Guayama Municipio 7 kmSalinas Municipio 7 kmArroyo Municipio 16 kmCayey Municipio 17 kmSanta Isabel Municipio 20 kmAibonito Municipio 21 kmPatillas Municipio 23 kmCoamo Municipio 24 kmCidra Municipio 25 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
9.1 km below the surface
Felt
no reports yet
Nearest
Guayama Municipio, 7 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1631 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 17.9540, -66.1960. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guayama Municipio, PR 7 km (4 mi) WSW of here earthquakes near Guayama Municipio
Salinas Municipio, PR 7 km (5 mi) ESE of here earthquakes near Salinas Municipio
Arroyo Municipio, PR 16 km (10 mi) W of here earthquakes near Arroyo Municipio
Cayey Municipio, PR 17 km (11 mi) SSW of here earthquakes near Cayey Municipio
Santa Isabel Municipio, PR 20 km (13 mi) E of here earthquakes near Santa Isabel Municipio
Aibonito Municipio, PR 21 km (13 mi) SSE of here earthquakes near Aibonito Municipio

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

Aftershocks so far

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

  1. 2.7 5 km NW of Orocovis, Puerto Rico
  2. 2.1 6 km SSW of Playita Cortada, Puerto Rico
  3. 2.6 5 km ESE of Naranjito, Puerto Rico
  4. 2.0 12 km S of Ponce, Puerto Rico
  5. 3.0 4 km S of G. L. Garcia, Puerto Rico
  6. 2.2 8 km SSW of Ponce, Puerto Rico
  7. 2.4 4 km NNE of Aibonito, Puerto Rico
  8. 2.3 10 km S of Salinas, Puerto Rico
  9. 2.3 12 km SW of Central Aguirre, Puerto Rico
  10. 1.9 1 km ESE of Salinas, Puerto Rico
  11. 2.5 17 km S of Jobos, Puerto Rico
  12. 2.3 4 km W of Aguas Buenas, Puerto Rico
  13. 2.4 4 km SSE of Ponce, Puerto Rico
  14. 2.2 0 km WSW of Capitanejo, Puerto Rico
  15. 2.2 7 km SSE of Lamboglia, 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.