QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8Md

5 km NNW of Yauco, Puerto Rico

· 17 km deep · released about 15 lb of TNT

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10 km30 km60 km120 km N Yauco Municipio 1 kmSabana Grande Municipio 9 kmGuayanilla Municipio 11 kmMaricao Municipio 12 kmAdjuntas Municipio 15 kmPeñuelas Municipio 16 kmGuánica Municipio 17 kmSan Germán Municipio 18 kmLas Marías Municipio 20 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
Yauco Municipio, 1 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3761 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 15 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 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 18.0872, -66.8646. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Yauco Municipio, PR 1 km (0 mi) WNW of here earthquakes near Yauco Municipio
Sabana Grande Municipio, PR 9 km (5 mi) E of here earthquakes near Sabana Grande Municipio
Guayanilla Municipio, PR 11 km (7 mi) NW of here earthquakes near Guayanilla Municipio
Maricao Municipio, PR 12 km (8 mi) SE of here earthquakes near Maricao Municipio
Adjuntas Municipio, PR 15 km (10 mi) SW of here earthquakes near Adjuntas Municipio
Peñuelas Municipio, PR 16 km (10 mi) WNW of here earthquakes near Peñuelas Municipio

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

Aftershocks so far

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

  1. 2.3 4 km N of Sabana Eneas, Puerto Rico
  2. 2.2 3 km NNE of Monte Grande, Puerto Rico
  3. 2.1 3 km NNW of Sabana Eneas, Puerto Rico
  4. 2.9 1 km ENE of Las Marias, Puerto Rico
  5. 2.2 19 km S of Ponce, Puerto Rico
  6. 2.5 16 km SSE of Tallaboa, Puerto Rico
  7. 2.3 5 km NNW of Puerto Real, Puerto Rico
  8. 2.1 16 km S of Ponce, Puerto Rico
  9. 1.8 Puerto Rico region
  10. 2.1 32 km S of La Parguera, Puerto Rico
  11. 2.2 17 km S of Ponce, Puerto Rico
  12. 2.2 16 km S of Ponce, Puerto Rico
  13. 2.2 16 km S of Ponce, Puerto Rico
  14. 2.2 15 km S of Ponce, Puerto Rico
  15. 2.0 2 km E of La Parguera, 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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