QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

13 km SSE of Tallaboa, Puerto Rico

· 12 km deep · released about 19 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ponce Municipio 15 kmPeñuelas Municipio 18 kmGuayanilla Municipio 20 kmJuana Díaz Municipio 23 kmGuánica Municipio 28 kmSanta Isabel Municipio 30 kmYauco Municipio 31 kmVillalba Municipio 34 kmAdjuntas Municipio 35 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
12 km below the surface
Felt
no reports yet
Nearest
Ponce Municipio, 15 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3429 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 17.8805, -66.6643. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ponce Municipio, PR 15 km (9 mi) SSW of here earthquakes near Ponce Municipio
Peñuelas Municipio, PR 18 km (11 mi) SSE of here earthquakes near Peñuelas Municipio
Guayanilla Municipio, PR 20 km (12 mi) SE of here earthquakes near Guayanilla Municipio
Juana Díaz Municipio, PR 23 km (14 mi) SW of here earthquakes near Juana Díaz Municipio
Guánica Municipio, PR 28 km (18 mi) ESE of here earthquakes near Guánica Municipio
Santa Isabel Municipio, PR 30 km (19 mi) WSW of here earthquakes near Santa Isabel Municipio

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

Aftershocks so far

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

  1. 2.0 7 km ESE of La Parguera, Puerto Rico
  2. 1.9 21 km S of La Parguera, Puerto Rico
  3. 2.0 0 km NW of Liborio Negron Torres, Puerto Rico
  4. 2.8 13 km S of Salinas, Puerto Rico
  5. 2.7 Puerto Rico region
  6. 2.4 26 km S of Ponce, Puerto Rico
  7. 2.2 9 km SW of Guánica, Puerto Rico
  8. 2.2 11 km SW of Guánica, Puerto Rico
  9. 1.8 Puerto Rico region
  10. 1.5 3 km S of Palmarejo, Puerto Rico
  11. 1.9 34 km S of La Parguera, Puerto Rico
  12. 1.6 31 km SSW of Guánica, Puerto Rico
  13. 2.5 3 km ESE of Jauca, Puerto Rico
  14. 2.2 0 km SSE of Tallaboa, Puerto Rico
  15. 1.8 15 km SSW of Guánica, 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.