QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2md

20 km SW of Stella, Puerto Rico

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

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10 km30 km60 km120 km N Rincón Municipio 22 kmHormigueros Municipio 27 kmAñasco Municipio 28 kmCabo Rojo Municipio 28 kmAguada Municipio 29 kmSan Germán Municipio 36 kmMoca Municipio 38 kmLajas Municipio 41 kmAguadilla Municipio 41 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
8.0 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Rincón Municipio, 22 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2288 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

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 18.1750, -67.3683. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Rincón Municipio, PR 22 km (14 mi) SW of here earthquakes near Rincón Municipio
Hormigueros Municipio, PR 27 km (17 mi) W of here earthquakes near Hormigueros Municipio
Añasco Municipio, PR 28 km (17 mi) WSW of here earthquakes near Añasco Municipio
Cabo Rojo Municipio, PR 28 km (17 mi) NW of here earthquakes near Cabo Rojo Municipio
Aguada Municipio, PR 29 km (18 mi) SW of here earthquakes near Aguada Municipio
San Germán Municipio, PR 36 km (22 mi) WNW of here earthquakes near San Germán Municipio

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

Aftershocks so far

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

  1. 2.2 6 km WSW of Guánica, Puerto Rico
  2. 2.5 4 km WSW of La Parguera, Puerto Rico
  3. 2.5 7 km ESE of La Parguera, Puerto Rico
  4. 3.2 6 km WSW of Fuig, Puerto Rico
  5. 1.6 6 km ESE of La Parguera, Puerto Rico
  6. 2.6 5 km WSW of Fuig, Puerto Rico
  7. 3.1 6 km WSW of Fuig, Puerto Rico
  8. 1.9 7 km ESE of La Parguera, Puerto Rico
  9. 3.2 7 km ESE of La Parguera, Puerto Rico
  10. 2.9 5 km W of La Parguera, Puerto Rico
  11. 2.8 7 km ESE of La Parguera, Puerto Rico
  12. 3.2 7 km WSW of Fuig, Puerto Rico
  13. 3.1 5 km WSW of La Parguera, Puerto Rico
  14. 2.2 6 km WSW of Guánica, Puerto Rico
  15. 2.1 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 5.2 on 2020-01-15 — it released about 1,100 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.