QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

31 km SSW of Guánica, Puerto Rico

· 32 km deep · released about 7.3 lb of TNT

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10 km30 km60 km120 km N Guánica Municipio 28 kmLajas Municipio 32 kmGuayanilla Municipio 39 kmCabo Rojo Municipio 39 kmSabana Grande Municipio 43 kmYauco Municipio 45 kmPeñuelas Municipio 45 kmSan Germán Municipio 46 kmHormigueros Municipio 50 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 1.6 (md)
Depth
32 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 28 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3395 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 7.3 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,500,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.3 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 17.6996, -66.9801. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 28 km (18 mi) SSW of here earthquakes near Guánica Municipio
Lajas Municipio, PR 32 km (20 mi) SSE of here earthquakes near Lajas Municipio
Guayanilla Municipio, PR 39 km (24 mi) SSW of here earthquakes near Guayanilla Municipio
Cabo Rojo Municipio, PR 39 km (24 mi) SSE of here earthquakes near Cabo Rojo Municipio
Sabana Grande Municipio, PR 43 km (27 mi) S of here earthquakes near Sabana Grande Municipio
Yauco Municipio, PR 45 km (28 mi) SSW of here earthquakes near Yauco Municipio

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

Aftershocks so far

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

  1. 1.6 6 km NNE of Lluveras, Puerto Rico
  2. 1.6 6 km SSW of Maricao, Puerto Rico
  3. 1.8 8 km NNW of Yauco, Puerto Rico
  4. 2.0 6 km NW of Sabana Grande, Puerto Rico
  5. 1.8 7 km NNW of Yauco, Puerto Rico
  6. 1.8 6 km NNW of Yauco, Puerto Rico
  7. 2.1 16 km S of Ponce, Puerto Rico
  8. 2.0 7 km SSW of Tallaboa, Puerto Rico
  9. 2.2 3 km SSE of Boquerón, Puerto Rico
  10. 2.7 2 km ESE of Magas Arriba, Puerto Rico
  11. 2.7 61 km S of Pole Ojea, Puerto Rico
  12. 2.3 4 km WSW of Tallaboa, Puerto Rico
  13. 1.9 14 km SSW of Guánica, Puerto Rico
  14. 1.9 3 km SE of La Parguera, Puerto Rico
  15. 2.2 17 km S of Guánica, 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.