QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

40 km WSW of Stella, Puerto Rico

· 137 km deep · released about 860 lb of TNT

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10 km30 km60 km120 km N Mayagüez Municipio 33 kmRincón Municipio 40 kmAguada Municipio 48 kmCabo Rojo Municipio 51 kmAñasco Municipio 51 kmHormigueros Municipio 52 kmAguadilla Municipio 57 kmMoca Municipio 59 kmSan Germán Municipio 61 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
137 km below the surface
Felt
no reports yet
Nearest
Mayagüez Municipio, 33 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2696 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 18.2093, -67.6068. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mayagüez Municipio, PR 33 km (20 mi) ENE of here earthquakes near Mayagüez Municipio
Rincón Municipio, PR 40 km (25 mi) WSW of here earthquakes near Rincón Municipio
Aguada Municipio, PR 48 km (30 mi) WSW of here earthquakes near Aguada Municipio
Cabo Rojo Municipio, PR 51 km (32 mi) WNW of here earthquakes near Cabo Rojo Municipio
Añasco Municipio, PR 51 km (32 mi) W of here earthquakes near Añasco Municipio
Hormigueros Municipio, PR 52 km (33 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

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

  1. 2.6 42 km WSW of Stella, Puerto Rico
  2. 2.1 28 km WNW of Aguadilla, Puerto Rico
  3. 1.7 9 km SSW of La Playa, Puerto Rico
  4. 3.0 41 km W of Rincón, Puerto Rico
  5. 2.8 27 km SW of Stella, Puerto Rico
  6. 2.8 47 km WSW of Stella, Puerto Rico
  7. 3.0 53 km W of Stella, Puerto Rico
  8. 2.0 4 km SSW of La Playa, Puerto Rico
  9. 2.2 12 km WNW of Puerto Real, Puerto Rico
  10. 3.0 52 km WNW of Rincón, Puerto Rico
  11. 2.6 29 km WNW of Rincón, Puerto Rico
  12. 2.0 6 km W of Boquerón, Puerto Rico
  13. 2.7 13 km NNW of Rincón, Puerto Rico
  14. 1.8 3 km W of La Playa, Puerto Rico
  15. 2.1 11 km WNW 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 4.4 on 2017-10-01 — it released about 140 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.