QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2md

59 km W of Stella, Puerto Rico

· 63 km deep · released about 1,700 lb of TNT

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10 km30 km60 km120 km N Mayagüez Municipio 18 kmRincón Municipio 59 kmAguada Municipio 67 kmCabo Rojo Municipio 70 kmAñasco Municipio 71 kmHormigueros Municipio 73 kmAguadilla Municipio 75 kmMoca Municipio 78 kmSan Germán Municipio 82 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 3.2 (md)
Depth
63 km below the surface
Felt
no reports yet
Nearest
Mayagüez Municipio, 18 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1912 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 1,700 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 200,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 9,100× the energy of this one
  3. Magna, Utah 2020 M 5.7 6,500× the energy of this one
  4. This earthquake M 3.2 about 1,700 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.7× 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 18.2278, -67.8003. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mayagüez Municipio, PR 18 km (11 mi) NNE of here earthquakes near Mayagüez Municipio
Rincón Municipio, PR 59 km (37 mi) WSW of here earthquakes near Rincón Municipio
Aguada Municipio, PR 67 km (42 mi) WSW of here earthquakes near Aguada Municipio
Cabo Rojo Municipio, PR 70 km (44 mi) WNW of here earthquakes near Cabo Rojo Municipio
Añasco Municipio, PR 71 km (44 mi) W of here earthquakes near Añasco Municipio
Hormigueros Municipio, PR 73 km (45 mi) W of here earthquakes near Hormigueros Municipio

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

Aftershocks so far

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

  1. 2.8 49 km W of Stella, Puerto Rico
  2. 3.1 55 km W of Puerto Real, Puerto Rico
  3. 3.3 61 km SE of Punta Cana, Dominican Republic
  4. 2.8 25 km SW of Stella, Puerto Rico
  5. 3.6 77 km SE of Punta Cana, Dominican Republic
  6. 3.2 41 km WSW of Stella, Puerto Rico
  7. 3.5 49 km SSE of Punta Cana, Dominican Republic
  8. 3.7 59 km SE of Punta Cana, Dominican Republic
  9. 2.6 35 km WSW of Stella, Puerto Rico
  10. 3.4 63 km W of Rincón, Puerto Rico
  11. 3.1 44 km W of Puerto Real, Puerto Rico
  12. 3.6 59 km W of Rincón, Puerto Rico
  13. 3.3 46 km WSW of Stella, Puerto Rico
  14. 3.5 21 km WNW of Puerto Real, Puerto Rico
  15. 3.4 50 km ESE of Punta Cana, Dominican Republic

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 4.4 on 2020-11-04 — it released about 72 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.