QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

0 km SW of Boquerón, Puerto Rico

· 18 km deep · released about 7.8 lb of TNT

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10 km30 km60 km120 km N Cabo Rojo Municipio 3 kmHormigueros Municipio 14 kmLajas Municipio 15 kmSan Germán Municipio 18 kmSabana Grande Municipio 25 kmGuánica Municipio 28 kmAñasco Municipio 30 kmMaricao Municipio 31 kmLas Marías Municipio 31 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
18 km below the surface
Felt
no reports yet
Nearest
Cabo Rojo Municipio, 3 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2765 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 7.8 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 1,900,000× 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 3.0 120× the energy of this one
  4. This earthquake M 1.6 about 7.8 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 18.0211, -67.1758. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cabo Rojo Municipio, PR 3 km (2 mi) NNE of here earthquakes near Cabo Rojo Municipio
Hormigueros Municipio, PR 14 km (9 mi) SSW of here earthquakes near Hormigueros Municipio
Lajas Municipio, PR 15 km (9 mi) WNW of here earthquakes near Lajas Municipio
San Germán Municipio, PR 18 km (11 mi) WSW of here earthquakes near San Germán Municipio
Sabana Grande Municipio, PR 25 km (16 mi) WSW of here earthquakes near Sabana Grande Municipio
Guánica Municipio, PR 28 km (17 mi) WNW of here earthquakes near Guánica 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. 2.1 21 km SW of Stella, Puerto Rico
  2. 1.7 8 km E of Maricao, Puerto Rico
  3. 1.6 10 km E of Maricao, Puerto Rico
  4. 1.9 2 km WSW of Liborio Negron Torres, Puerto Rico
  5. 1.5 3 km NNW of La Parguera, Puerto Rico
  6. 2.3 1 km WNW of Pole Ojea, Puerto Rico
  7. 2.2 1 km N of Pole Ojea, Puerto Rico
  8. 2.2 4 km NNE of Sabana Eneas, Puerto Rico
  9. 2.0 13 km SSE of Maria Antonia, Puerto Rico
  10. 2.0 Puerto Rico region
  11. 2.4 3 km NW of Aguadilla, Puerto Rico
  12. 1.7 9 km SSW of La Playa, Puerto Rico
  13. 1.7 10 km S of Guánica, Puerto Rico
  14. 1.8 9 km SSW of Guánica, Puerto Rico
  15. 1.6 1 km NNW of Monte Grande, 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.