QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

0 km SW of Boquerón, Puerto Rico

· 25 km deep · released about 25 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 17 kmSabana Grande Municipio 25 kmGuánica Municipio 28 kmAñasco Municipio 30 kmMaricao Municipio 30 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 1.9 (md)
Depth
25 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 2818 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 25 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 620,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 440,000× the energy of this one
  3. Around the size people start to feel M 3.0 39× the energy of this one
  4. This earthquake M 1.9 about 25 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 18.0210, -67.1745. 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 17 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

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

  1. 1.5 5 km NE of La Parguera, Puerto Rico
  2. 1.8 5 km NNE of Lluveras, Puerto Rico
  3. 2.4 7 km NE of Sabana Grande, Puerto Rico
  4. 1.9 0 km WNW of Fuig, Puerto Rico
  5. 1.6 2 km SE of Lajas, Puerto Rico
  6. 1.6 3 km WSW of Guánica, Puerto Rico
  7. 1.9 1 km W of Fuig, Puerto Rico
  8. 1.6 2 km ESE of La Parguera, Puerto Rico
  9. 1.9 4 km NNE of Sabana Eneas, Puerto Rico
  10. 2.8 19 km W of Puerto Real, Puerto Rico
  11. 2.5 1 km NW of Lajas, Puerto Rico
  12. 2.0 2 km WSW of Tallaboa, Puerto Rico
  13. 2.3 19 km WNW of Puerto Real, Puerto Rico
  14. 2.1 12 km NW of Puerto Real, Puerto Rico
  15. 2.0 3 km SSW 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.