QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4Md

46 km S of Santa Isabel, Puerto Rico

· 11 km deep · released about 120 lb of TNT

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10 km30 km60 km120 km N Santa Isabel Municipio 45 kmJuana Díaz Municipio 50 kmSalinas Municipio 51 kmPonce Municipio 52 kmGuayama Municipio 58 kmPeñuelas Municipio 60 kmGuayanilla Municipio 62 kmCoamo Municipio 62 kmVillalba Municipio 64 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
11 km below the surface
Felt
no reports yet
Nearest
Santa Isabel Municipio, 45 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3688 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 120 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 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 89,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.9× the energy of this one
  4. This earthquake M 2.4 about 120 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 17.5515, -66.4619. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Santa Isabel Municipio, PR 45 km (28 mi) S of here earthquakes near Santa Isabel Municipio
Juana Díaz Municipio, PR 50 km (31 mi) S of here earthquakes near Juana Díaz Municipio
Salinas Municipio, PR 51 km (32 mi) SSW of here earthquakes near Salinas Municipio
Ponce Municipio, PR 52 km (33 mi) SSE of here earthquakes near Ponce Municipio
Guayama Municipio, PR 58 km (36 mi) SW of here earthquakes near Guayama Municipio
Peñuelas Municipio, PR 60 km (37 mi) SSE of here earthquakes near Peñuelas Municipio

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

Aftershocks so far

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

  1. 3.0 63 km S of Santa Isabel, Puerto Rico
  2. 2.6 17 km S of Tallaboa, Puerto Rico
  3. 2.2 4 km SSW of Central Aguirre, Puerto Rico
  4. 2.2 2 km E of Potala Pastillo, Puerto Rico
  5. 2.2 1 km SW of Salinas, Puerto Rico
  6. 2.7 1 km WNW of Potala Pastillo, Puerto Rico
  7. 2.5 21 km S of Ponce, Puerto Rico
  8. 2.3 16 km S of Ponce, Puerto Rico
  9. 1.9 13 km S of Ponce, Puerto Rico
  10. 2.0 18 km S of Ponce, Puerto Rico
  11. 2.3 16 km S of Ponce, Puerto Rico
  12. 2.4 13 km S of Ponce, Puerto Rico
  13. 2.2 13 km S of Ponce, Puerto Rico
  14. 2.4 14 km S of Ponce, Puerto Rico
  15. 2.3 13 km SSE of Tallaboa, 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.