QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

4 km SSE of Tallaboa, Puerto Rico

· 10 km deep · released about 25 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Peñuelas Municipio 8 kmPonce Municipio 11 kmGuayanilla Municipio 12 kmYauco Municipio 22 kmJuana Díaz Municipio 22 kmGuánica Municipio 24 kmAdjuntas Municipio 26 kmSabana Grande Municipio 30 kmJayuya Municipio 30 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
10 km below the surface
Felt
no reports yet
Nearest
Peñuelas Municipio, 8 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3109 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 25 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 420,000× the energy of this one
  3. Around the size people start to feel M 3.0 38× the energy of this one
  4. This earthquake M 1.9 about 25 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 17.9588, -66.6970. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Peñuelas Municipio, PR 8 km (5 mi) SSE of here earthquakes near Peñuelas Municipio
Ponce Municipio, PR 11 km (7 mi) WSW of here earthquakes near Ponce Municipio
Guayanilla Municipio, PR 12 km (7 mi) ESE of here earthquakes near Guayanilla Municipio
Yauco Municipio, PR 22 km (14 mi) SE of here earthquakes near Yauco Municipio
Juana Díaz Municipio, PR 22 km (14 mi) W of here earthquakes near Juana Díaz Municipio
Guánica Municipio, PR 24 km (15 mi) E of here earthquakes near Guánica Municipio

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

Aftershocks so far

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

  1. 1.8 1 km ESE of Maria Antonia, Puerto Rico
  2. 2.4 18 km SSE of Maria Antonia, Puerto Rico
  3. 2.3 1 km ESE of Palmarejo, Puerto Rico
  4. 2.0 10 km S of Salinas, Puerto Rico
  5. 1.8 5 km ESE of Las Marías, Puerto Rico
  6. 1.7 7 km NE of Tallaboa Alta, Puerto Rico
  7. 2.2 16 km SSE of Maria Antonia, Puerto Rico
  8. 1.9 2 km E of Jayuya, Puerto Rico
  9. 2.1 4 km NNE of Lluveras, Puerto Rico
  10. 1.8 4 km NNE of San Germán, Puerto Rico
  11. 1.9 5 km ESE of Las Marías, Puerto Rico
  12. 1.5 5 km NNW of Yauco, Puerto Rico
  13. 2.4 2 km ESE of Las Marías, Puerto Rico
  14. 1.8 4 km E of Las Marías, Puerto Rico
  15. 2.0 4 km E of Las Marías, 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.