QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

2 km WNW of Las Ollas, Puerto Rico

· 6.0 km deep · released about 19 lb of TNT

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10 km30 km60 km120 km N Juana Díaz Municipio 7 kmVillalba Municipio 11 kmSanta Isabel Municipio 11 kmCoamo Municipio 12 kmPonce Municipio 18 kmOrocovis Municipio 20 kmSalinas Municipio 21 kmAibonito Municipio 22 kmBarranquitas Municipio 23 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
6.0 km below the surface
Felt
no reports yet
Nearest
Juana Díaz Municipio, 7 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2799 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 18.0378, -66.4438. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Juana Díaz Municipio, PR 7 km (4 mi) NE of here earthquakes near Juana Díaz Municipio
Villalba Municipio, PR 11 km (7 mi) SSE of here earthquakes near Villalba Municipio
Santa Isabel Municipio, PR 11 km (7 mi) NNW of here earthquakes near Santa Isabel Municipio
Coamo Municipio, PR 12 km (7 mi) SW of here earthquakes near Coamo Municipio
Ponce Municipio, PR 18 km (11 mi) ENE of here earthquakes near Ponce Municipio
Orocovis Municipio, PR 20 km (13 mi) S of here earthquakes near Orocovis 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. 1.8 10 km WSW of Adjuntas, Puerto Rico
  2. 2.4 15 km S of Jobos, Puerto Rico
  3. 2.9 3 km N of Naranjito, Puerto Rico
  4. 1.9 1 km SW of Magas Arriba, Puerto Rico
  5. 1.6 1 km ESE of Los Llanos, Puerto Rico
  6. 1.9 3 km S of Tallaboa, Puerto Rico
  7. 2.1 6 km S of Tallaboa, Puerto Rico
  8. 1.9 1 km W of Jauca, Puerto Rico
  9. 1.8 13 km E of Maricao, Puerto Rico
  10. 1.6 13 km S of Tallaboa, Puerto Rico
  11. 2.0 16 km SSE of Tallaboa, Puerto Rico
  12. 1.7 10 km WNW of Adjuntas, Puerto Rico
  13. 2.1 1 km SSE of Palomas, Puerto Rico
  14. 1.6 1 km NNW of Jayuya, Puerto Rico
  15. 2.1 9 km SSE of Arroyo, 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.