QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

3 km N of Yauco, Puerto Rico

· 19 km deep · released about 14 lb of TNT

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10 km30 km60 km120 km N Yauco Municipio 2 kmGuayanilla Municipio 9 kmSabana Grande Municipio 11 kmPeñuelas Municipio 14 kmMaricao Municipio 15 kmGuánica Municipio 16 kmAdjuntas Municipio 16 kmSan Germán Municipio 20 kmLas Marías Municipio 22 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
19 km below the surface
Felt
no reports yet
Nearest
Yauco Municipio, 2 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2698 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 5.7 760,000× the energy of this one
  3. Around the size people start to feel M 3.0 68× 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 18.0691, -66.8490. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Yauco Municipio, PR 2 km (1 mi) SSE of here earthquakes near Yauco Municipio
Guayanilla Municipio, PR 9 km (6 mi) NW of here earthquakes near Guayanilla Municipio
Sabana Grande Municipio, PR 11 km (7 mi) E of here earthquakes near Sabana Grande Municipio
Peñuelas Municipio, PR 14 km (8 mi) WNW of here earthquakes near Peñuelas Municipio
Maricao Municipio, PR 15 km (9 mi) SE of here earthquakes near Maricao Municipio
Guánica Municipio, PR 16 km (10 mi) NNE of here earthquakes near Guánica Municipio

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

Aftershocks so far

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

  1. 1.9 21 km S of La Parguera, Puerto Rico
  2. 2.0 3 km NW of Cabo Rojo, Puerto Rico
  3. 2.3 4 km N of Puerto Real, Puerto Rico
  4. 1.6 2 km NNW of Lluveras, Puerto Rico
  5. 2.3 9 km ESE of Maricao, Puerto Rico
  6. 1.5 15 km SSW of Potala Pastillo, Puerto Rico
  7. 1.9 14 km SW of Potala Pastillo, Puerto Rico
  8. 1.8 2 km ESE of Potala Pastillo, Puerto Rico
  9. 2.6 3 km WSW of Ciales, Puerto Rico
  10. 2.1 14 km NW of Puerto Real, Puerto Rico
  11. 1.5 3 km NE of Río Cañas Abajo, Puerto Rico
  12. 1.8 4 km SW of Juncal, Puerto Rico
  13. 1.6 8 km NE of Sabana Grande, Puerto Rico
  14. 1.8 6 km ESE of Jayuya, Puerto Rico
  15. 1.9 6 km NW of Villalba, 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.