QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

9 km S of Tallaboa, Puerto Rico

· 17 km deep · released about 14 lb of TNT

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10 km30 km60 km120 km N Peñuelas Municipio 13 kmGuayanilla Municipio 14 kmPonce Municipio 16 kmGuánica Municipio 22 kmYauco Municipio 24 kmJuana Díaz Municipio 26 kmAdjuntas Municipio 31 kmSabana Grande Municipio 31 kmLajas 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 1.8 (md)
Depth
17 km below the surface
Felt
no reports yet
Nearest
Peñuelas Municipio, 13 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2842 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 14 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 790,000× the energy of this one
  3. Around the size people start to feel M 3.0 70× the energy of this one
  4. This earthquake M 1.8 about 14 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 17.9096, -66.7195. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Peñuelas Municipio, PR 13 km (8 mi) S of here earthquakes near Peñuelas Municipio
Guayanilla Municipio, PR 14 km (8 mi) SE of here earthquakes near Guayanilla Municipio
Ponce Municipio, PR 16 km (10 mi) SW of here earthquakes near Ponce Municipio
Guánica Municipio, PR 22 km (14 mi) ESE of here earthquakes near Guánica Municipio
Yauco Municipio, PR 24 km (15 mi) SE of here earthquakes near Yauco Municipio
Juana Díaz Municipio, PR 26 km (16 mi) WSW of here earthquakes near Juana Díaz Municipio

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

Aftershocks so far

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

  1. 1.9 8 km S of Tallaboa, Puerto Rico
  2. 1.6 4 km SSE of Magas Arriba, Puerto Rico
  3. 1.8 3 km SSW of Peñuelas, Puerto Rico
  4. 2.0 3 km ENE of Ponce, Puerto Rico
  5. 2.0 2 km ENE of Pole Ojea, Puerto Rico
  6. 1.6 7 km S of Jauca, Puerto Rico
  7. 1.6 7 km S of Tallaboa, Puerto Rico
  8. 1.6 4 km ESE of Maricao, Puerto Rico
  9. 1.8 8 km S of Tallaboa, Puerto Rico
  10. 1.6 5 km SSW of Tallaboa, Puerto Rico
  11. 1.8 9 km S of Tallaboa, Puerto Rico
  12. 1.5 7 km S of Tallaboa, Puerto Rico
  13. 1.9 4 km SSW of Palmarejo, Puerto Rico
  14. 2.0 5 km S of Tallaboa, Puerto Rico
  15. 2.0 8 km S of Tallaboa, 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.