QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

19 km W of Puerto Real, Puerto Rico

· 150 km deep · released about 530 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cabo Rojo Municipio 21 kmHormigueros Municipio 28 kmRincón Municipio 34 kmSan Germán Municipio 36 kmLajas Municipio 36 kmAñasco Municipio 36 kmAguada Municipio 41 kmSabana Grande Municipio 45 kmLas Marías Municipio 46 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
150 km below the surface
Felt
no reports yet
Nearest
Cabo Rojo Municipio, 21 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2719 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 530 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 29,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 20,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.8× the energy of this one
  4. This earthquake M 2.8 about 530 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 18.0521, -67.3710. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cabo Rojo Municipio, PR 21 km (13 mi) WNW of here earthquakes near Cabo Rojo Municipio
Hormigueros Municipio, PR 28 km (18 mi) WSW of here earthquakes near Hormigueros Municipio
Rincón Municipio, PR 34 km (21 mi) SSW of here earthquakes near Rincón Municipio
San Germán Municipio, PR 36 km (22 mi) W of here earthquakes near San Germán Municipio
Lajas Municipio, PR 36 km (22 mi) WNW of here earthquakes near Lajas Municipio
Añasco Municipio, PR 36 km (23 mi) SW of here earthquakes near Añasco Municipio

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

Aftershocks so far

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

  1. 2.2 3 km ESE of Las Marías, Puerto Rico
  2. 1.7 2 km ESE of Las Marías, Puerto Rico
  3. 2.0 2 km NNE of Las Marías, Puerto Rico
  4. 1.9 3 km NNE of Las Marías, Puerto Rico
  5. 3.8 1 km ESE of Las Marías, Puerto Rico
  6. 2.8 4 km WNW of Mayagüez, Puerto Rico
  7. 2.5 2 km SW of Espino, Puerto Rico
  8. 2.1 2 km N of Sabana Eneas, Puerto Rico
  9. 2.0 4 km SW of Maricao, Puerto Rico
  10. 2.5 14 km SSW of Stella, Puerto Rico
  11. 1.8 14 km SSW of Guánica, Puerto Rico
  12. 2.6 43 km W of Rincón, Puerto Rico
  13. 2.6 48 km WSW of Stella, Puerto Rico
  14. 1.9 4 km NE of La Parguera, Puerto Rico
  15. 1.7 6 km E of La Parguera, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.3 on 2017-10-14 — it released about 160 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.