QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

4 km N of Los Llanos, Puerto Rico

· 10 km deep · released about 6.8 lb of TNT

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10 km30 km60 km120 km N Coamo Municipio 6 kmVillalba Municipio 7 kmOrocovis Municipio 14 kmJuana Díaz Municipio 14 kmBarranquitas Municipio 16 kmAibonito Municipio 16 kmSanta Isabel Municipio 16 kmSalinas Municipio 21 kmJayuya 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 1.6 (md)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Coamo Municipio, 6 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3061 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 6.8 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,600,000× the energy of this one
  3. Around the size people start to feel M 3.0 140× the energy of this one
  4. This earthquake M 1.6 about 6.8 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 18.0976, -66.4130. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Coamo Municipio, PR 6 km (4 mi) W of here earthquakes near Coamo Municipio
Villalba Municipio, PR 7 km (5 mi) ESE of here earthquakes near Villalba Municipio
Orocovis Municipio, PR 14 km (9 mi) S of here earthquakes near Orocovis Municipio
Juana Díaz Municipio, PR 14 km (9 mi) NE of here earthquakes near Juana Díaz Municipio
Barranquitas Municipio, PR 16 km (10 mi) SW of here earthquakes near Barranquitas Municipio
Aibonito Municipio, PR 16 km (10 mi) WSW of here earthquakes near Aibonito Municipio

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

Aftershocks so far

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

  1. 2.8 4 km N of Barceloneta, Puerto Rico
  2. 1.6 3 km E of Tallaboa, Puerto Rico
  3. 1.6 4 km SW of Capitanejo, Puerto Rico
  4. 2.2 4 km WSW of Capitanejo, Puerto Rico
  5. 2.5 3 km SW of Capitanejo, Puerto Rico
  6. 2.6 6 km NE of Comerío, Puerto Rico
  7. 2.0 1 km E of Parcelas Nuevas, Puerto Rico
  8. 2.2 5 km NNW of Levittown, Puerto Rico
  9. 2.2 3 km NNW of Orocovis, Puerto Rico
  10. 1.7 1 km ESE of Guayabal, Puerto Rico
  11. 1.8 5 km NNW of Yaurel, Puerto Rico
  12. 1.8 5 km SSW of Salinas, Puerto Rico
  13. 2.1 2 km NE of Lluveras, Puerto Rico
  14. 2.2 7 km SE of Arroyo, Puerto Rico
  15. 2.0 13 km N of Yauco, 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.