QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0Md

11 km WNW of Puerto Real, Puerto Rico

· 122 km deep · released about 950 lb of TNT

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10 km30 km60 km120 km N Hormigueros Municipio 17 kmCabo Rojo Municipio 18 kmRincón Municipio 23 kmAñasco Municipio 23 kmSan Germán Municipio 26 kmAguada Municipio 29 kmLajas Municipio 30 kmLas Marías Municipio 34 kmMoca Municipio 35 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 3.0 (Md)
Depth
122 km below the surface
Felt
no reports yet
Nearest
Hormigueros Municipio, 17 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3604 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 950 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 350,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 950 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 18.1317, -67.2792. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hormigueros Municipio, PR 17 km (11 mi) W of here earthquakes near Hormigueros Municipio
Cabo Rojo Municipio, PR 18 km (11 mi) NW of here earthquakes near Cabo Rojo Municipio
Rincón Municipio, PR 23 km (14 mi) S of here earthquakes near Rincón Municipio
Añasco Municipio, PR 23 km (14 mi) SW of here earthquakes near Añasco Municipio
San Germán Municipio, PR 26 km (16 mi) W of here earthquakes near San Germán Municipio
Aguada Municipio, PR 29 km (18 mi) SSW of here earthquakes near Aguada Municipio

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

Aftershocks so far

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

  1. 2.0 2 km NW of Puerto Real, Puerto Rico
  2. 2.5 2 km SSW of La Playa, Puerto Rico
  3. 2.5 4 km SSW of Palmarejo, Puerto Rico
  4. 1.8 22 km S of La Parguera, Puerto Rico
  5. 2.0 10 km W of Pole Ojea, Puerto Rico
  6. 2.4 Puerto Rico region
  7. 3.0 Mona Passage
  8. 1.6 8 km SE of Pole Ojea, Puerto Rico
  9. 2.1 5 km W of Maricao, Puerto Rico
  10. 1.8 0 km NNW of Palmarejo, Puerto Rico
  11. 2.3 7 km SSE of Lares, Puerto Rico
  12. 1.9 3 km WSW of Palmarejo, Puerto Rico
  13. 1.7 14 km W of Puerto Real, Puerto Rico
  14. 2.8 9 km NW of Caban, Puerto Rico
  15. 3.3 9 km NW of Caban, 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.