QuakeIndex

Earthquake · reviewed by a seismologist

M 3.5Md

70 km WSW of Stella, Puerto Rico

· 150 km deep · released about 2.7 tons of TNT

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10 km30 km60 km120 km N Mayagüez Municipio 4 kmRincón Municipio 70 kmCabo Rojo Municipio 75 kmAguada Municipio 78 kmHormigueros Municipio 80 kmAñasco Municipio 81 kmAguadilla Municipio 87 kmSan Germán Municipio 89 kmMoca Municipio 89 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 3.5 (Md)
Depth
150 km below the surface
Felt
no reports yet
Nearest
Mayagüez Municipio, 4 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3371 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 2.7 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.5 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 63,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 2,800× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,000× the energy of this one
  4. This earthquake M 3.5 about 2.7 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 5.6× more

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 18.1221, -67.8760. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mayagüez Municipio, PR 4 km (3 mi) NNE of here earthquakes near Mayagüez Municipio
Rincón Municipio, PR 70 km (44 mi) WSW of here earthquakes near Rincón Municipio
Cabo Rojo Municipio, PR 75 km (46 mi) W of here earthquakes near Cabo Rojo Municipio
Aguada Municipio, PR 78 km (49 mi) WSW of here earthquakes near Aguada Municipio
Hormigueros Municipio, PR 80 km (50 mi) W of here earthquakes near Hormigueros Municipio
Añasco Municipio, PR 81 km (50 mi) WSW of here earthquakes near Añasco Municipio

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

Aftershocks so far

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

  1. 3.0 68 km SE of Punta Cana, Dominican Republic
  2. 2.8 71 km W of Pole Ojea, Puerto Rico
  3. 2.3 33 km W of Stella, Puerto Rico
  4. 2.3 34 km W of Puerto Real, Puerto Rico
  5. 2.6 28 km W of Puerto Real, Puerto Rico
  6. 3.4 70 km SE of Punta Cana, Dominican Republic
  7. 2.6 64 km SE of Boca de Yuma, Dominican Republic
  8. 3.3 61 km SE of Punta Cana, Dominican Republic
  9. 2.3 31 km WSW of Stella, Puerto Rico
  10. 3.5 51 km SE of Boca de Yuma, Dominican Republic
  11. 2.4 32 km WSW of Stella, Puerto Rico
  12. 3.6 67 km WSW of Stella, Puerto Rico
  13. 3.4 67 km SE of Punta Cana, Dominican Republic
  14. 3.6 Mona Passage
  15. 3.4 Dominican Republic region

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.