QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

8 km ESE of Adjuntas, Puerto Rico

· 13 km deep · released about 17 lb of TNT

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10 km30 km60 km120 km N Jayuya Municipio 12 kmAdjuntas Municipio 13 kmPeñuelas Municipio 13 kmPonce Municipio 14 kmUtuado Municipio 17 kmVillalba Municipio 19 kmGuayanilla Municipio 20 kmYauco Municipio 22 kmJuana Díaz Municipio 22 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
13 km below the surface
Felt
no reports yet
Nearest
Jayuya Municipio, 12 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2526 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 17 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 5.8 900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 640,000× the energy of this one
  3. Around the size people start to feel M 3.0 57× the energy of this one
  4. This earthquake M 1.8 about 17 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 18.1230, -66.6535. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Jayuya Municipio, PR 12 km (7 mi) SW of here earthquakes near Jayuya Municipio
Adjuntas Municipio, PR 13 km (8 mi) ESE of here earthquakes near Adjuntas Municipio
Peñuelas Municipio, PR 13 km (8 mi) NE of here earthquakes near Peñuelas Municipio
Ponce Municipio, PR 14 km (9 mi) NNW of here earthquakes near Ponce Municipio
Utuado Municipio, PR 17 km (11 mi) SSE of here earthquakes near Utuado Municipio
Villalba Municipio, PR 19 km (12 mi) W of here earthquakes near Villalba 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. 2.3 9 km SSW of Potala Pastillo, Puerto Rico
  2. 1.9 4 km ENE of Hormigueros, Puerto Rico
  3. 1.8 13 km S of Ponce, Puerto Rico
  4. 1.8 1 km S of Guayanilla, Puerto Rico
  5. 1.9 1 km ENE of Sabana Grande, Puerto Rico
  6. 2.1 0 km NNW of Mariano Colón, Puerto Rico
  7. 2.6 3 km SE of Jayuya, Puerto Rico
  8. 2.0 3 km SSE of Palmarejo, Puerto Rico
  9. 2.3 10 km SW of Central Aguirre, Puerto Rico
  10. 1.8 Puerto Rico region
  11. 1.6 3 km NNE of Ponce, Puerto Rico
  12. 2.3 2 km SSW of Las Ochenta, Puerto Rico
  13. 2.0 1 km WNW of Las Ochenta, Puerto Rico
  14. 2.1 4 km WNW of La Parguera, Puerto Rico
  15. 1.6 7 km S of La Parguera, 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.