QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2md

23 km WSW of Stella, Puerto Rico

· 109 km deep · released about 1,800 lb of TNT

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10 km30 km60 km120 km N Rincón Municipio 24 kmAguada Municipio 31 kmAñasco Municipio 35 kmHormigueros Municipio 40 kmAguadilla Municipio 41 kmMoca Municipio 42 kmCabo Rojo Municipio 43 kmSan Germán Municipio 49 kmMayagüez Municipio 49 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
109 km below the surface
Felt
no reports yet
Nearest
Rincón Municipio, 24 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 105 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 1,800 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 6.7 180,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 8,200× the energy of this one
  3. Magna, Utah 2020 M 5.7 5,800× the energy of this one
  4. This earthquake M 3.2 about 1,800 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.9× 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 18.2752, -67.4637. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Rincón Municipio, PR 24 km (15 mi) WSW of here earthquakes near Rincón Municipio
Aguada Municipio, PR 31 km (20 mi) WSW of here earthquakes near Aguada Municipio
Añasco Municipio, PR 35 km (22 mi) W of here earthquakes near Añasco Municipio
Hormigueros Municipio, PR 40 km (25 mi) WNW of here earthquakes near Hormigueros Municipio
Aguadilla Municipio, PR 41 km (25 mi) SW of here earthquakes near Aguadilla Municipio
Moca Municipio, PR 42 km (26 mi) WSW of here earthquakes near Moca 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. 2.5 7 km NNW of Puerto Real, Puerto Rico
  2. 2.1 2 km SE of Boquerón, Puerto Rico
  3. 2.4 6 km ESE of Mayagüez, Puerto Rico
  4. 3.0 7 km SE of Espino, Puerto Rico
  5. 2.5 3 km ESE of Boquerón, Puerto Rico
  6. 3.1 37 km NW of San Antonio, Puerto Rico
  7. 2.7 1 km N of San Germán, Puerto Rico
  8. 2.3 5 km NNW of San Germán, Puerto Rico
  9. 2.0 3 km NE of Pole Ojea, Puerto Rico
  10. 2.2 5 km WNW of Las Marías, Puerto Rico
  11. 2.3 3 km NE of Boquerón, 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 65 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.