QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4Md

4 km N of Vega Baja, Puerto Rico

· 121 km deep · released about 1.9 tons of TNT

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10 km30 km60 km120 km N Vega Baja Municipio 3 kmVega Alta Municipio 8 kmManatí Municipio 11 kmDorado Municipio 14 kmBarceloneta Municipio 17 kmMorovis Municipio 19 kmToa Alta Municipio 21 kmCorozal Municipio 21 kmToa Baja Municipio 21 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 3.4 (Md)
Depth
121 km below the surface
Felt
no reports yet
Nearest
Vega Baja Municipio, 3 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3455 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 1.9 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 89,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 4,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,800× the energy of this one
  4. This earthquake M 3.4 about 1.9 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 4× 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 18.4843, -66.3937. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Vega Baja Municipio, PR 3 km (2 mi) N of here earthquakes near Vega Baja Municipio
Vega Alta Municipio, PR 8 km (5 mi) NW of here earthquakes near Vega Alta Municipio
Manatí Municipio, PR 11 km (7 mi) ENE of here earthquakes near Manatí Municipio
Dorado Municipio, PR 14 km (9 mi) W of here earthquakes near Dorado Municipio
Barceloneta Municipio, PR 17 km (11 mi) E of here earthquakes near Barceloneta Municipio
Morovis Municipio, PR 19 km (12 mi) N of here earthquakes near Morovis Municipio

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

Aftershocks so far

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

  1. 2.9 14 km NNE of Carrizales, Puerto Rico
  2. 3.0 11 km NE of Arecibo, Puerto Rico
  3. 2.9 6 km SW of Guaynabo, Puerto Rico
  4. 2.3 8 km ESE of Jayuya, Puerto Rico
  5. 2.9 44 km N of Brenas, Puerto Rico
  6. 2.6 1 km N of Candelaria Arenas, Puerto Rico
  7. 1.8 2 km WSW of Villalba, Puerto Rico
  8. 3.0 47 km N of Dorado, Puerto Rico
  9. 3.0 15 km NNE of Carrizales, Puerto Rico
  10. 2.6 12 km N of Garrochales, Puerto Rico
  11. 2.9 32 km NNW of Brenas, Puerto Rico
  12. 2.6 14 km N of San Juan, Puerto Rico
  13. 2.3 4 km WNW of Villalba, Puerto Rico
  14. 2.9 35 km N of San Juan, Puerto Rico
  15. 2.0 3 km NW of Villalba, 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.