QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

28 km SSW of Central Aguirre, Puerto Rico

· 36 km deep · released about 100 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Santa Isabel Municipio 28 kmSalinas Municipio 29 kmGuayama Municipio 34 kmJuana Díaz Municipio 37 kmArroyo Municipio 41 kmCoamo Municipio 44 kmPonce Municipio 45 kmCayey Municipio 46 kmAibonito Municipio 47 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 2.4 (md)
Depth
36 km below the surface
Felt
no reports yet
Nearest
Santa Isabel Municipio, 28 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3096 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 100 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 140,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 100,000× the energy of this one
  3. Around the size people start to feel M 3.0 9.1× the energy of this one
  4. This earthquake M 2.4 about 100 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 17.7145, -66.3126. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Santa Isabel Municipio, PR 28 km (17 mi) SSE of here earthquakes near Santa Isabel Municipio
Salinas Municipio, PR 29 km (18 mi) S of here earthquakes near Salinas Municipio
Guayama Municipio, PR 34 km (21 mi) SSW of here earthquakes near Guayama Municipio
Juana Díaz Municipio, PR 37 km (23 mi) SSE of here earthquakes near Juana Díaz Municipio
Arroyo Municipio, PR 41 km (25 mi) SW of here earthquakes near Arroyo Municipio
Coamo Municipio, PR 44 km (27 mi) S of here earthquakes near Coamo Municipio

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

Aftershocks so far

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

  1. 1.9 3 km NNE of Río Cañas Abajo, Puerto Rico
  2. 1.6 2 km W of Potala Pastillo, Puerto Rico
  3. 2.4 8 km SSE of Jauca, Puerto Rico
  4. 1.8 2 km E of Aguilita, Puerto Rico
  5. 2.4 5 km SE of Arroyo, Puerto Rico
  6. 1.7 5 km SSW of Lamboglia, Puerto Rico
  7. 2.2 2 km E of Arroyo, Puerto Rico
  8. 2.2 5 km SSW of Lamboglia, Puerto Rico
  9. 2.1 4 km ESE of Arroyo, Puerto Rico
  10. 1.8 2 km S of Palmas, Puerto Rico
  11. 1.6 4 km SSE of Palmas, Puerto Rico
  12. 2.0 4 km S of Palmas, Puerto Rico
  13. 1.5 5 km SSW of Lamboglia, Puerto Rico
  14. 1.9 1 km NNE of Buena Vista, Puerto Rico
  15. 2.0 0 km S of Palmas, 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

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