QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8Md

12 km NW of Puerto Real, Puerto Rico

· 15 km deep · released about 480 lb of TNT

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10 km30 km60 km120 km N Hormigueros Municipio 16 kmCabo Rojo Municipio 20 kmAñasco Municipio 20 kmRincón Municipio 20 kmSan Germán Municipio 25 kmAguada Municipio 26 kmLajas Municipio 31 kmLas Marías Municipio 31 kmMoca 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 2.8 (Md)
Depth
15 km below the surface
Felt
no reports yet
Nearest
Hormigueros Municipio, 16 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3498 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 480 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 32,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 2× the energy of this one
  4. This earthquake M 2.8 about 480 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 18.1564, -67.2634. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hormigueros Municipio, PR 16 km (10 mi) W of here earthquakes near Hormigueros Municipio
Cabo Rojo Municipio, PR 20 km (12 mi) NNW of here earthquakes near Cabo Rojo Municipio
Añasco Municipio, PR 20 km (13 mi) SW of here earthquakes near Añasco Municipio
Rincón Municipio, PR 20 km (13 mi) S of here earthquakes near Rincón Municipio
San Germán Municipio, PR 25 km (15 mi) WNW of here earthquakes near San Germán Municipio
Aguada Municipio, PR 26 km (16 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

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

  1. 2.7 10 km NW of Puerto Real, Puerto Rico
  2. 2.4 17 km SSW of Stella, Puerto Rico
  3. 1.9 10 km WNW of Puerto Real, Puerto Rico
  4. 1.9 5 km ENE of La Parguera, Puerto Rico
  5. 2.5 Mona Passage
  6. 2.8 36 km W of Rincón, Puerto Rico
  7. 2.4 9 km S of Pole Ojea, Puerto Rico
  8. 2.1 7 km WSW of Guánica, Puerto Rico
  9. 2.3 2 km NNE of Mayagüez, Puerto Rico
  10. 1.7 Puerto Rico region
  11. 1.8 12 km SSW of La Parguera, Puerto Rico
  12. 2.5 4 km WSW of Las Marías, Puerto Rico
  13. 2.6 34 km NW of Rincón, Puerto Rico
  14. 2.3 0 km WNW of Liborio Negron Torres, Puerto Rico
  15. 2.2 9 km WNW of Puerto Real, 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

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