QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

Puerto Rico region

· 7.0 km deep · released about 700 lb of TNT

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10 km30 km60 km120 km N Cabo Rojo Municipio 33 kmHormigueros Municipio 46 kmLajas Municipio 47 kmMayagüez Municipio 48 kmSan Germán Municipio 52 kmRincón Municipio 54 kmAñasco Municipio 56 kmGuánica Municipio 59 kmSabana Grande Municipio 59 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 2.9 (md)
Depth
7.0 km below the surface
Felt
no reports yet
Nearest
Cabo Rojo Municipio, 33 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3120 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 700 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 22,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 15,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.4× the energy of this one
  4. This earthquake M 2.9 about 700 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 17.9031, -67.4765. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cabo Rojo Municipio, PR 33 km (20 mi) WSW of here earthquakes near Cabo Rojo Municipio
Hormigueros Municipio, PR 46 km (29 mi) SW of here earthquakes near Hormigueros Municipio
Lajas Municipio, PR 47 km (29 mi) W of here earthquakes near Lajas Municipio
Mayagüez Municipio, PR 48 km (30 mi) ESE of here earthquakes near Mayagüez Municipio
San Germán Municipio, PR 52 km (32 mi) WSW of here earthquakes near San Germán Municipio
Rincón Municipio, PR 54 km (34 mi) SSW of here earthquakes near Rincón Municipio

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

Aftershocks so far

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

  1. 2.2 5 km SSW of Palmarejo, Puerto Rico
  2. 2.3 9 km WNW of Puerto Real, Puerto Rico
  3. 2.4 8 km W of Mayagüez, Puerto Rico
  4. 3.0 16 km W of Rincón, Puerto Rico
  5. 2.2 26 km W of Pole Ojea, Puerto Rico
  6. 1.8 16 km NNE of La Parguera, Puerto Rico
  7. 2.1 5 km W of Boquerón, Puerto Rico
  8. 2.2 6 km WSW of Puerto Real, Puerto Rico
  9. 2.1 2 km SW of La Parguera, Puerto Rico
  10. 3.0 80 km W of Pole Ojea, Puerto Rico
  11. 2.8 Mona Passage
  12. 1.7 8 km S of La Parguera, Puerto Rico
  13. 2.0 5 km SSW of La Parguera, Puerto Rico
  14. 2.7 20 km W of Rincón, Puerto Rico
  15. 2.3 43 km WSW of Pole Ojea, 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.