QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

11 km SSW of Potala Pastillo, Puerto Rico

· 23 km deep · released about 18 lb of TNT

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10 km30 km60 km120 km N Juana Díaz Municipio 12 kmPonce Municipio 12 kmSanta Isabel Municipio 18 kmPeñuelas Municipio 23 kmVillalba Municipio 27 kmGuayanilla Municipio 29 kmCoamo Municipio 30 kmSalinas Municipio 31 kmJayuya Municipio 34 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
23 km below the surface
Felt
no reports yet
Nearest
Juana Díaz Municipio, 12 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3120 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 18 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 5.8 840,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 600,000× the energy of this one
  3. Around the size people start to feel M 3.0 53× the energy of this one
  4. This earthquake M 1.9 about 18 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 17.9038, -66.5491. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Juana Díaz Municipio, PR 12 km (8 mi) SSW of here earthquakes near Juana Díaz Municipio
Ponce Municipio, PR 12 km (8 mi) SSE of here earthquakes near Ponce Municipio
Santa Isabel Municipio, PR 18 km (11 mi) WSW of here earthquakes near Santa Isabel Municipio
Peñuelas Municipio, PR 23 km (15 mi) SE of here earthquakes near Peñuelas Municipio
Villalba Municipio, PR 27 km (16 mi) SSW of here earthquakes near Villalba Municipio
Guayanilla Municipio, PR 29 km (18 mi) ESE of here earthquakes near Guayanilla Municipio

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

Aftershocks so far

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

  1. 2.2 16 km SSE of Maria Antonia, Puerto Rico
  2. 1.9 2 km E of Jayuya, Puerto Rico
  3. 2.1 4 km NNE of Lluveras, Puerto Rico
  4. 1.5 5 km NNW of Yauco, Puerto Rico
  5. 1.9 8 km SSE of Indios, Puerto Rico
  6. 2.4 28 km SSW of Central Aguirre, Puerto Rico
  7. 2.4 2 km SSW of Sabana Grande, Puerto Rico
  8. 2.4 7 km NW of Santo Domingo, Puerto Rico
  9. 1.9 4 km SSW of Liborio Negron Torres, Puerto Rico
  10. 2.3 17 km S of Tallaboa, Puerto Rico
  11. 3.2 13 km S of Potala Pastillo, Puerto Rico
  12. 1.7 13 km SSE of Guánica, Puerto Rico
  13. 1.9 14 km SSW of Guánica, Puerto Rico
  14. 2.4 1 km N of Guayanilla, Puerto Rico
  15. 1.6 1 km SSW of Magas Arriba, 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

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