QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

8 km NNW of Yauco, Puerto Rico

· 16 km deep · released about 13 lb of TNT

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10 km30 km60 km120 km N Yauco Municipio 3 kmSabana Grande Municipio 9 kmMaricao Municipio 10 kmGuayanilla Municipio 14 kmAdjuntas Municipio 14 kmPeñuelas Municipio 17 kmLas Marías Municipio 18 kmSan Germán Municipio 18 kmGuánica Municipio 19 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
16 km below the surface
Felt
no reports yet
Nearest
Yauco Municipio, 3 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3348 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 13 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 5.7 810,000× the energy of this one
  3. Around the size people start to feel M 3.0 72× the energy of this one
  4. This earthquake M 1.8 about 13 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 18.1075, -66.8678. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Yauco Municipio, PR 3 km (2 mi) NNW of here earthquakes near Yauco Municipio
Sabana Grande Municipio, PR 9 km (5 mi) ENE of here earthquakes near Sabana Grande Municipio
Maricao Municipio, PR 10 km (6 mi) SE of here earthquakes near Maricao Municipio
Guayanilla Municipio, PR 14 km (8 mi) NNW of here earthquakes near Guayanilla Municipio
Adjuntas Municipio, PR 14 km (9 mi) SW of here earthquakes near Adjuntas Municipio
Peñuelas Municipio, PR 17 km (11 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

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

  1. 2.1 4 km NNW of Las Marías, Puerto Rico
  2. 2.3 1 km NW of Maria Antonia, Puerto Rico
  3. 2.2 4 km W of Las Marías, Puerto Rico
  4. 1.7 1 km SSW of Liborio Negron Torres, Puerto Rico
  5. 2.5 2 km SSW of Palmarejo, Puerto Rico
  6. 2.0 3 km WNW of Puerto Real, Puerto Rico
  7. 2.1 5 km SSW of Maricao, Puerto Rico
  8. 2.0 4 km SE of Pole Ojea, Puerto Rico
  9. 2.4 Puerto Rico region
  10. 2.1 5 km SSW of La Parguera, Puerto Rico
  11. 2.3 17 km S of Tallaboa, Puerto Rico
  12. 2.3 13 km SSW of Guánica, Puerto Rico
  13. 2.1 5 km WNW of Maricao, Puerto Rico
  14. 1.6 5 km W of Maricao, Puerto Rico
  15. 2.0 6 km NNE of Lluveras, 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.