QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2md

104 km N of Loíza, Puerto Rico

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

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10 km30 km60 km120 km N Loíza Municipio 104 kmCataño Municipio 109 kmSan Juan Municipio 109 kmToa Baja Municipio 109 kmCarolina Municipio 110 kmDorado Municipio 110 kmRío Grande Municipio 111 kmLuquillo Municipio 113 kmFajardo Municipio 113 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
29 km below the surface
Felt
no reports yet
Nearest
Loíza Municipio, 104 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3344 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 19.3745, -65.8331. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Loíza Municipio, PR 104 km (65 mi) N of here earthquakes near Loíza Municipio
Cataño Municipio, PR 109 km (67 mi) NNE of here earthquakes near Cataño Municipio
San Juan Municipio, PR 109 km (68 mi) NNE of here earthquakes near San Juan Municipio
Toa Baja Municipio, PR 109 km (68 mi) NNE of here earthquakes near Toa Baja Municipio
Carolina Municipio, PR 110 km (68 mi) N of here earthquakes near Carolina Municipio
Dorado Municipio, PR 110 km (68 mi) NNE of here earthquakes near Dorado Municipio

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

Aftershocks so far

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

  1. 2.3 93 km NNE of Vieques, Puerto Rico
  2. 2.7 65 km N of San Juan, Puerto Rico
  3. 3.3 84 km N of Brenas, Puerto Rico
  4. 3.4 67 km NNE of Suárez, Puerto Rico
  5. 3.5 135 km N of San Juan, Puerto Rico
  6. 2.3 78 km NNE of Vieques, Puerto Rico
  7. 2.5 100 km N of Suárez, Puerto Rico
  8. 2.6 127 km NNE of Vieques, Puerto Rico
  9. 3.1 84 km NNE of Suárez, Puerto Rico
  10. 3.1 109 km N of Suárez, Puerto Rico
  11. 2.8 96 km NNE of Suárez, Puerto Rico
  12. 3.2 112 km NNE of Vieques, Puerto Rico
  13. 3.2 108 km NNE of Vieques, Puerto Rico
  14. 2.3 102 km NNE of Vieques, Puerto Rico
  15. 3.3 130 km NNE of Vieques, 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.