QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

38 km W of Pole Ojea, Puerto Rico

· 31 km deep · released about 890 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cabo Rojo Municipio 39 kmMayagüez Municipio 39 kmHormigueros Municipio 50 kmRincón Municipio 53 kmLajas Municipio 53 kmSan Germán Municipio 57 kmAñasco Municipio 58 kmAguada Municipio 61 kmSabana Grande Municipio 65 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
31 km below the surface
Felt
no reports yet
Nearest
Cabo Rojo Municipio, 39 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 758 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 890 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 6.7 380,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 17,000× 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 890 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 17.9485, -67.5448. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cabo Rojo Municipio, PR 39 km (24 mi) W of here earthquakes near Cabo Rojo Municipio
Mayagüez Municipio, PR 39 km (24 mi) ESE of here earthquakes near Mayagüez Municipio
Hormigueros Municipio, PR 50 km (31 mi) WSW of here earthquakes near Hormigueros Municipio
Rincón Municipio, PR 53 km (33 mi) SW of here earthquakes near Rincón Municipio
Lajas Municipio, PR 53 km (33 mi) W of here earthquakes near Lajas Municipio
San Germán Municipio, PR 57 km (35 mi) WSW 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. 3.5 76 km W of Puerto Real, Puerto Rico
  2. 3.2 30 km W of Rincón, Puerto Rico
  3. 2.8 3 km WSW of La Parguera, Puerto Rico
  4. 2.1 2 km ESE of Puerto Real, Puerto Rico
  5. 2.8 3 km WNW of Mayagüez, Puerto Rico
  6. 2.9 19 km SW of Stella, Puerto Rico
  7. 2.4 1 km SSW of Palmarejo, Puerto Rico
  8. 3.0 29 km WSW of Stella, Puerto Rico
  9. 3.1 22 km W of Rincón, Puerto Rico
  10. 2.9 33 km WSW of Stella, Puerto Rico
  11. 2.4 7 km SW of La Parguera, Puerto Rico
  12. 3.2 25 km WSW of Stella, Puerto Rico
  13. 2.7 9 km SW of La Parguera, Puerto Rico
  14. 2.1 9 km NNW of Puerto Real, Puerto Rico
  15. 2.7 8 km NNW of Puerto Real, 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 4.5 on 2021-07-18 — it released about 170 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.