QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2md

13 km NNW of Brenas, Puerto Rico

· 103 km deep · released about 2,000 lb of TNT

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10 km30 km60 km120 km N Vega Baja Municipio 15 kmVega Alta Municipio 17 kmDorado Municipio 17 kmManatí Municipio 20 kmBarceloneta Municipio 23 kmToa Baja Municipio 24 kmToa Alta Municipio 28 kmCataño Municipio 29 kmMorovis Municipio 30 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
103 km below the surface
Felt
no reports yet
Nearest
Vega Baja Municipio, 15 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 351 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 2,000 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 6.7 170,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 7,700× the energy of this one
  3. Magna, Utah 2020 M 5.7 5,400× the energy of this one
  4. This earthquake M 3.2 about 2,000 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 2.1× 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 18.5868, -66.3772. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Vega Baja Municipio, PR 15 km (9 mi) N of here earthquakes near Vega Baja Municipio
Vega Alta Municipio, PR 17 km (11 mi) NNW of here earthquakes near Vega Alta Municipio
Dorado Municipio, PR 17 km (11 mi) NW of here earthquakes near Dorado Municipio
Manatí Municipio, PR 20 km (12 mi) NE of here earthquakes near Manatí Municipio
Barceloneta Municipio, PR 23 km (14 mi) NE of here earthquakes near Barceloneta Municipio
Toa Baja Municipio, PR 24 km (15 mi) NW of here earthquakes near Toa Baja Municipio

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

Aftershocks so far

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

  1. 2.8 2 km NW of Levittown, Puerto Rico
  2. 3.0 10 km NNE of Brenas, Puerto Rico
  3. 3.3 9 km N of Tierras Nuevas Poniente, Puerto Rico
  4. 3.1 47 km N of Brenas, Puerto Rico
  5. 3.5 22 km N of Brenas, Puerto Rico
  6. 2.3 6 km ENE of Naranjito, Puerto Rico
  7. 3.0 38 km NNW of Brenas, Puerto Rico
  8. 3.0 9 km NNW of Sabana, Puerto Rico
  9. 3.0 46 km N of San Juan, Puerto Rico
  10. 2.6 6 km S of Bajadero, Puerto Rico
  11. 3.0 14 km N of Arecibo, Puerto Rico
  12. 3.2 12 km NNE of Carrizales, Puerto Rico
  13. 3.3 4 km WNW of Trujillo Alto, Puerto Rico
  14. 3.3 3 km SE of Naranjito, Puerto Rico
  15. 2.5 11 km NNE of Tierras Nuevas Poniente, 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 4.8 on 2017-08-18 — it released about 240 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.