QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

4 km N of Palmarejo, Puerto Rico

· 20 km deep · released about 19 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Coamo Municipio 4 kmAibonito Municipio 7 kmBarranquitas Municipio 11 kmVillalba Municipio 16 kmSalinas Municipio 16 kmComerío Municipio 17 kmOrocovis Municipio 17 kmCayey Municipio 18 kmSanta Isabel Municipio 18 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 1.9 (md)
Depth
20 km below the surface
Felt
no reports yet
Nearest
Coamo Municipio, 4 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2781 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 19 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 790,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 560,000× the energy of this one
  3. Around the size people start to feel M 3.0 50× the energy of this one
  4. This earthquake M 1.9 about 19 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 18.1058, -66.3238. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Coamo Municipio, PR 4 km (2 mi) E of here earthquakes near Coamo Municipio
Aibonito Municipio, PR 7 km (4 mi) WSW of here earthquakes near Aibonito Municipio
Barranquitas Municipio, PR 11 km (7 mi) S of here earthquakes near Barranquitas Municipio
Villalba Municipio, PR 16 km (10 mi) E of here earthquakes near Villalba Municipio
Salinas Municipio, PR 16 km (10 mi) NNW of here earthquakes near Salinas Municipio
Comerío Municipio, PR 17 km (11 mi) SW of here earthquakes near Comerío 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. 2.1 0 km NNW of Jobos, Puerto Rico
  2. 2.2 0 km NNE of Jobos, Puerto Rico
  3. 1.7 0 km NE of Jobos, Puerto Rico
  4. 2.6 2 km NNE of Jobos, Puerto Rico
  5. 2.2 1 km SSW of Jobos, Puerto Rico
  6. 2.0 Puerto Rico region
  7. 2.3 1 km SW of Jobos, Puerto Rico
  8. 1.8 0 km NE of Jobos, Puerto Rico
  9. 2.6 0 km ENE of Jobos, Puerto Rico
  10. 2.1 2 km N of Jobos, Puerto Rico
  11. 1.6 1 km ENE of Jobos, Puerto Rico
  12. 2.1 5 km N of Jobos, Puerto Rico
  13. 1.8 1 km SSW of Jobos, Puerto Rico
  14. 2.9 1 km E of Jobos, Puerto Rico
  15. 4.6 3 km SSW of Jobos, 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.