QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

2 km E of Aguilita, Puerto Rico

· 16 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Juana Díaz Municipio 4 kmPonce Municipio 11 kmVillalba Municipio 12 kmSanta Isabel Municipio 15 kmCoamo Municipio 18 kmJayuya Municipio 22 kmOrocovis Municipio 23 kmPeñuelas Municipio 23 kmSalinas 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
16 km below the surface
Felt
no reports yet
Nearest
Juana Díaz Municipio, 4 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3060 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 5.7 790,000× the energy of this one
  3. Around the size people start to feel M 3.0 70× 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 18.0265, -66.5095. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Juana Díaz Municipio, PR 4 km (2 mi) NNW of here earthquakes near Juana Díaz Municipio
Ponce Municipio, PR 11 km (7 mi) ENE of here earthquakes near Ponce Municipio
Villalba Municipio, PR 12 km (8 mi) SSW of here earthquakes near Villalba Municipio
Santa Isabel Municipio, PR 15 km (9 mi) WNW of here earthquakes near Santa Isabel Municipio
Coamo Municipio, PR 18 km (11 mi) WSW of here earthquakes near Coamo Municipio
Jayuya Municipio, PR 22 km (14 mi) SSE of here earthquakes near Jayuya Municipio

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

Aftershocks so far

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

  1. 1.8 1 km SSW of Adjuntas, Puerto Rico
  2. 2.5 2 km S of Adjuntas, Puerto Rico
  3. 2.4 1 km SSW of Adjuntas, Puerto Rico
  4. 2.6 2 km SSW of Adjuntas, Puerto Rico
  5. 2.1 1 km SSE of Lluveras, Puerto Rico
  6. 1.7 20 km SSE of Maria Antonia, Puerto Rico
  7. 1.8 19 km SSE of Maria Antonia, Puerto Rico
  8. 2.3 8 km NNE of Jayuya, Puerto Rico
  9. 2.4 3 km N of Lluveras, Puerto Rico
  10. 1.9 11 km SSE of Jauca, Puerto Rico
  11. 2.1 1 km NE of Guayanilla, Puerto Rico
  12. 2.0 6 km NE of Comerío, Puerto Rico
  13. 2.0 4 km S of Arroyo, Puerto Rico
  14. 2.0 39 km S of Tallaboa, Puerto Rico
  15. 2.3 3 km SE of Magas Arriba, 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.