QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8Md

42 km W of Stella, Puerto Rico

· 14 km deep · released about 480 lb of TNT

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10 km30 km60 km120 km N Mayagüez Municipio 33 kmRincón Municipio 42 kmAguada Municipio 50 kmAñasco Municipio 54 kmCabo Rojo Municipio 57 kmHormigueros Municipio 57 kmAguadilla Municipio 58 kmMoca Municipio 60 kmSan Germán Municipio 66 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
14 km below the surface
Felt
no reports yet
Nearest
Mayagüez Municipio, 33 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3535 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 18.2623, -67.6395. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mayagüez Municipio, PR 33 km (20 mi) NE of here earthquakes near Mayagüez Municipio
Rincón Municipio, PR 42 km (26 mi) WSW of here earthquakes near Rincón Municipio
Aguada Municipio, PR 50 km (31 mi) WSW of here earthquakes near Aguada Municipio
Añasco Municipio, PR 54 km (33 mi) W of here earthquakes near Añasco Municipio
Cabo Rojo Municipio, PR 57 km (35 mi) WNW of here earthquakes near Cabo Rojo Municipio
Hormigueros Municipio, PR 57 km (35 mi) WNW of here earthquakes near Hormigueros 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. 3.0 57 km E of Punta Cana, Dominican Republic
  2. 3.3 62 km SE of Punta Cana, Dominican Republic
  3. 1.8 35 km WNW of Rincón, Puerto Rico
  4. 3.0 36 km WNW of Rincón, Puerto Rico
  5. 2.7 44 km W of Rincón, Puerto Rico
  6. 2.1 39 km NW of Rincón, Puerto Rico
  7. 3.2 61 km SE of Punta Cana, Dominican Republic
  8. 2.1 32 km WNW of Rincón, Puerto Rico
  9. 3.0 43 km WNW of Rincón, Puerto Rico
  10. 2.6 35 km NW of Rincón, Puerto Rico
  11. 2.5 18 km WNW of Puerto Real, Puerto Rico
  12. 2.5 29 km WNW of Puerto Real, Puerto Rico
  13. 2.7 33 km WNW of Rincón, Puerto Rico
  14. 2.6 13 km WNW of Rincón, Puerto Rico
  15. 2.6 30 km SW of Stella, 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.