QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

4 km E of Tallaboa Alta, Puerto Rico

· 11 km deep · released about 6.4 lb of TNT

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10 km30 km60 km120 km N Ponce Municipio 8 kmPeñuelas Municipio 8 kmGuayanilla Municipio 16 kmAdjuntas Municipio 18 kmJayuya Municipio 19 kmJuana Díaz Municipio 19 kmVillalba Municipio 21 kmYauco Municipio 22 kmUtuado Municipio 24 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 1.6 (md)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Ponce Municipio, 8 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2982 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 6.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.6 about 6.4 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 18.0571, -66.6553. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ponce Municipio, PR 8 km (5 mi) NW of here earthquakes near Ponce Municipio
Peñuelas Municipio, PR 8 km (5 mi) ENE of here earthquakes near Peñuelas Municipio
Guayanilla Municipio, PR 16 km (10 mi) ENE of here earthquakes near Guayanilla Municipio
Adjuntas Municipio, PR 18 km (11 mi) SE of here earthquakes near Adjuntas Municipio
Jayuya Municipio, PR 19 km (12 mi) SSW of here earthquakes near Jayuya Municipio
Juana Díaz Municipio, PR 19 km (12 mi) WNW of here earthquakes near Juana Díaz Municipio

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

Aftershocks so far

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

  1. 1.7 3 km W of Sabana Grande, Puerto Rico
  2. 2.5 14 km SSW of Guánica, Puerto Rico
  3. 2.4 14 km SSW of Guánica, Puerto Rico
  4. 1.7 8 km S of Villalba, Puerto Rico
  5. 2.0 4 km WSW of Ponce, Puerto Rico
  6. 1.7 2 km NNE of Santo Domingo, Puerto Rico
  7. 2.7 4 km ESE of Florida, Puerto Rico
  8. 2.1 4 km SSW of San Sebastián, Puerto Rico
  9. 1.6 4 km SSW of Adjuntas, Puerto Rico
  10. 2.1 3 km N of Santo Domingo, Puerto Rico
  11. 1.7 4 km ESE of Maricao, Puerto Rico
  12. 1.9 4 km SE of Lajas, Puerto Rico
  13. 2.2 1 km SSE of Adjuntas, Puerto Rico
  14. 1.6 3 km SW of Adjuntas, Puerto Rico
  15. 2.1 3 km E of Hormigueros, 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.