QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

3 km E of Ponce, Puerto Rico

· 15 km deep · released about 14 lb of TNT

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10 km30 km60 km120 km N Ponce Municipio 2 kmJuana Díaz Municipio 10 kmPeñuelas Municipio 15 kmVillalba Municipio 18 kmSanta Isabel Municipio 22 kmGuayanilla Municipio 22 kmJayuya Municipio 23 kmAdjuntas Municipio 26 kmCoamo Municipio 27 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 1.8 (md)
Depth
15 km below the surface
Felt
no reports yet
Nearest
Ponce Municipio, 2 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2839 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 14 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 760,000× the energy of this one
  3. Around the size people start to feel M 3.0 68× the energy of this one
  4. This earthquake M 1.8 about 14 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 18.0085, -66.5886. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ponce Municipio, PR 2 km (1 mi) ENE of here earthquakes near Ponce Municipio
Juana Díaz Municipio, PR 10 km (6 mi) W of here earthquakes near Juana Díaz Municipio
Peñuelas Municipio, PR 15 km (9 mi) E of here earthquakes near Peñuelas Municipio
Villalba Municipio, PR 18 km (11 mi) SW of here earthquakes near Villalba Municipio
Santa Isabel Municipio, PR 22 km (14 mi) WNW of here earthquakes near Santa Isabel Municipio
Guayanilla Municipio, PR 22 km (14 mi) E of here earthquakes near Guayanilla Municipio

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

Aftershocks so far

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

  1. 2.3 1 km S of Las Marías, Puerto Rico
  2. 2.2 12 km SSW of Potala Pastillo, Puerto Rico
  3. 1.6 1 km W of Adjuntas, Puerto Rico
  4. 2.1 1 km SW of Guayanilla, Puerto Rico
  5. 1.8 7 km S of Tallaboa, Puerto Rico
  6. 2.2 9 km S of Tallaboa, Puerto Rico
  7. 1.8 2 km ENE of Parcelas Nuevas, Puerto Rico
  8. 1.9 3 km SW of Adjuntas, Puerto Rico
  9. 1.5 6 km NNE of Lluveras, Puerto Rico
  10. 2.6 7 km NNE of Lluveras, Puerto Rico
  11. 2.0 1 km SSW of Potala Pastillo, Puerto Rico
  12. 1.6 1 km E of Liborio Negron Torres, Puerto Rico
  13. 1.8 8 km S of Tallaboa, Puerto Rico
  14. 1.8 11 km W of Adjuntas, Puerto Rico
  15. 1.8 5 km ESE of Maricao, 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.