QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

6 km S of Guánica, Puerto Rico

· 23 km deep · released about 7.6 lb of TNT

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10 km30 km60 km120 km N Guánica Municipio 4 kmLajas Municipio 16 kmGuayanilla Municipio 16 kmSabana Grande Municipio 20 kmYauco Municipio 20 kmPeñuelas Municipio 23 kmSan Germán Municipio 26 kmMaricao Municipio 30 kmCabo Rojo Municipio 30 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
23 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 4 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2605 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 7.6 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 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× 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 7.6 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, -66.9116. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 4 km (3 mi) SSE of here earthquakes near Guánica Municipio
Lajas Municipio, PR 16 km (10 mi) ESE of here earthquakes near Lajas Municipio
Guayanilla Municipio, PR 16 km (10 mi) SW of here earthquakes near Guayanilla Municipio
Sabana Grande Municipio, PR 20 km (12 mi) S of here earthquakes near Sabana Grande Municipio
Yauco Municipio, PR 20 km (13 mi) SSW of here earthquakes near Yauco Municipio
Peñuelas Municipio, PR 23 km (15 mi) SW 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. 1.6 3 km ESE of Sabana Grande, Puerto Rico
  2. 1.8 4 km E of Hormigueros, Puerto Rico
  3. 2.2 15 km WSW of Pole Ojea, Puerto Rico
  4. 1.5 5 km SW of Sabana Grande, Puerto Rico
  5. 2.0 1 km SW of Espino, Puerto Rico
  6. 2.1 3 km SSE of Palmarejo, Puerto Rico
  7. 1.6 3 km SSW of Palmarejo, Puerto Rico
  8. 2.7 3 km WNW of Mayagüez, Puerto Rico
  9. 1.9 3 km SSW of Palmarejo, Puerto Rico
  10. 1.9 5 km NE of Sabana Grande, Puerto Rico
  11. 1.8 11 km SSE of Ponce, Puerto Rico
  12. 2.2 2 km S of Palmarejo, Puerto Rico
  13. 1.9 5 km WNW of Mayagüez, Puerto Rico
  14. 2.0 2 km NNW of Hormigueros, Puerto Rico
  15. 2.0 3 km NW 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.