QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

22 km WSW of Puerto Real, Puerto Rico

· 2.6 km deep · released about 860 lb of TNT

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10 km30 km60 km120 km N Cabo Rojo Municipio 23 kmHormigueros Municipio 32 kmLajas Municipio 38 kmRincón Municipio 38 kmSan Germán Municipio 39 kmAñasco Municipio 41 kmAguada Municipio 45 kmSabana Grande Municipio 48 kmLas Marías Municipio 50 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 3.0 (md)
Depth
2.6 km below the surface
Felt
no reports yet
Nearest
Cabo Rojo Municipio, 23 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1517 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 860 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 390,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 18,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 12,000× the energy of this one
  4. This earthquake M 3.0 about 860 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 18.0232, -67.3963. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cabo Rojo Municipio, PR 23 km (14 mi) W of here earthquakes near Cabo Rojo Municipio
Hormigueros Municipio, PR 32 km (20 mi) WSW of here earthquakes near Hormigueros Municipio
Lajas Municipio, PR 38 km (24 mi) W of here earthquakes near Lajas Municipio
Rincón Municipio, PR 38 km (24 mi) SSW of here earthquakes near Rincón Municipio
San Germán Municipio, PR 39 km (24 mi) WSW of here earthquakes near San Germán Municipio
Añasco Municipio, PR 41 km (25 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

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

  1. 1.7 4 km WSW of Fuig, Puerto Rico
  2. 2.2 5 km WSW of Guánica, Puerto Rico
  3. 2.5 36 km W of Puerto Real, Puerto Rico
  4. 2.2 2 km W of Fuig, Puerto Rico
  5. 3.1 15 km W of Puerto Real, Puerto Rico
  6. 2.2 6 km NE of La Parguera, Puerto Rico
  7. 2.4 5 km W of Fuig, Puerto Rico
  8. 2.2 5 km WSW of Guánica, Puerto Rico
  9. 2.1 6 km E of La Parguera, Puerto Rico
  10. 2.5 5 km WSW of La Parguera, Puerto Rico
  11. 2.0 Puerto Rico region
  12. 2.3 6 km WSW of Fuig, Puerto Rico
  13. 1.8 6 km ESE of La Parguera, Puerto Rico
  14. 2.2 4 km WSW of Fuig, Puerto Rico
  15. 2.0 2 km WSW of Guánica, 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 5.3 on 2020-07-03 — it released about 3,100 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.