QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

29 km WSW of Stella, Puerto Rico

· 5.1 km deep · released about 1,100 lb of TNT

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10 km30 km60 km120 km N Rincón Municipio 30 kmAguada Municipio 37 kmAñasco Municipio 41 kmMayagüez Municipio 43 kmHormigueros Municipio 44 kmCabo Rojo Municipio 45 kmAguadilla Municipio 47 kmMoca Municipio 48 kmSan Germán Municipio 52 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
5.1 km below the surface
Felt
no reports yet
Nearest
Rincón Municipio, 30 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 798 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 1,100 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 6.7 310,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 14,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 9,800× the energy of this one
  4. This earthquake M 3.0 about 1,100 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 18.2443, -67.5128. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Rincón Municipio, PR 30 km (18 mi) WSW of here earthquakes near Rincón Municipio
Aguada Municipio, PR 37 km (23 mi) WSW of here earthquakes near Aguada Municipio
Añasco Municipio, PR 41 km (25 mi) W of here earthquakes near Añasco Municipio
Mayagüez Municipio, PR 43 km (27 mi) ENE of here earthquakes near Mayagüez Municipio
Hormigueros Municipio, PR 44 km (27 mi) WNW of here earthquakes near Hormigueros Municipio
Cabo Rojo Municipio, PR 45 km (28 mi) NW of here earthquakes near Cabo Rojo Municipio

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

Aftershocks so far

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

  1. 2.6 9 km NNW of Puerto Real, Puerto Rico
  2. 3.3 58 km WSW of Stella, Puerto Rico
  3. 3.5 76 km W of Puerto Real, Puerto Rico
  4. 3.2 30 km W of Rincón, Puerto Rico
  5. 2.3 21 km WNW of Rincón, Puerto Rico
  6. 2.8 3 km NW of Mayagüez, Puerto Rico
  7. 2.1 2 km ESE of Puerto Real, Puerto Rico
  8. 2.3 7 km ESE of Mayagüez, Puerto Rico
  9. 2.8 3 km WNW of Mayagüez, Puerto Rico
  10. 3.2 37 km WNW of Rincón, Puerto Rico
  11. 2.9 19 km SW of Stella, 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 4.4 on 2017-10-01 — it released about 110 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.