QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

29 km S of Central Aguirre, Puerto Rico

· 29 km deep · released about 98 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Salinas Municipio 32 kmGuayama Municipio 32 kmSanta Isabel Municipio 35 kmArroyo Municipio 36 kmPatillas Municipio 41 kmJuana Díaz Municipio 46 kmCayey Municipio 46 kmMaunabo Municipio 47 kmCoamo Municipio 49 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
29 km below the surface
Felt
no reports yet
Nearest
Salinas Municipio, 32 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 666 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 98 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 5.8 150,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 110,000× the energy of this one
  3. Around the size people start to feel M 3.0 9.8× the energy of this one
  4. This earthquake M 2.3 about 98 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 17.6903, -66.2042. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Salinas Municipio, PR 32 km (20 mi) S of here earthquakes near Salinas Municipio
Guayama Municipio, PR 32 km (20 mi) SSW of here earthquakes near Guayama Municipio
Santa Isabel Municipio, PR 35 km (22 mi) SSE of here earthquakes near Santa Isabel Municipio
Arroyo Municipio, PR 36 km (22 mi) SSW of here earthquakes near Arroyo Municipio
Patillas Municipio, PR 41 km (26 mi) SW of here earthquakes near Patillas Municipio
Juana Díaz Municipio, PR 46 km (28 mi) SE of here earthquakes near Juana Díaz Municipio

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

Aftershocks so far

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

  1. 2.4 3 km SSW of Playita Cortada, Puerto Rico
  2. 2.1 22 km S of Lamboglia, Puerto Rico
  3. 2.2 9 km S of Emajagua, Puerto Rico
  4. 2.1 0 km N of Potala Pastillo, Puerto Rico
  5. 1.6 2 km SSE of Lamboglia, Puerto Rico
  6. 2.4 0 km SW of Santa Isabel, Puerto Rico
  7. 2.4 0 km NW of Santa Isabel, Puerto Rico
  8. 2.1 4 km WNW of Olimpo, Puerto Rico
  9. 2.4 3 km SSW of Playita Cortada, Puerto Rico
  10. 2.8 8 km SSE of Ponce, Puerto Rico
  11. 2.3 1 km WSW of Vázquez, Puerto Rico
  12. 2.7 2 km NNW of Coco, Puerto Rico
  13. 2.4 18 km S of Emajagua, Puerto Rico
  14. 2.0 1 km NW of El Ojo, Puerto Rico
  15. 2.1 3 km SSW of Playita Cortada, 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 2,500 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.