QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

3 km SW of Río Lajas, Puerto Rico

· 72 km deep · released about 120 lb of TNT

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10 km30 km60 km120 km N Toa Alta Municipio 6 kmVega Alta Municipio 8 kmCorozal Municipio 9 kmNaranjito Municipio 11 kmDorado Municipio 12 kmBayamón Municipio 14 kmVega Baja Municipio 14 kmToa Baja Municipio 14 kmMorovis Municipio 15 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 2.4 (md)
Depth
72 km below the surface
Felt
no reports yet
Nearest
Toa Alta Municipio, 6 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3416 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 120 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 120,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 86,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.7× the energy of this one
  4. This earthquake M 2.4 about 120 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 18.3756, -66.2965. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Toa Alta Municipio, PR 6 km (3 mi) WNW of here earthquakes near Toa Alta Municipio
Vega Alta Municipio, PR 8 km (5 mi) SSE of here earthquakes near Vega Alta Municipio
Corozal Municipio, PR 9 km (5 mi) NNE of here earthquakes near Corozal Municipio
Naranjito Municipio, PR 11 km (7 mi) NNW of here earthquakes near Naranjito Municipio
Dorado Municipio, PR 12 km (7 mi) SSW of here earthquakes near Dorado Municipio
Bayamón Municipio, PR 14 km (9 mi) WNW of here earthquakes near Bayamón Municipio

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

Aftershocks so far

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

  1. 2.7 7 km NW of Sumidero, Puerto Rico
  2. 2.8 7 km N of Tierras Nuevas Poniente, Puerto Rico
  3. 2.4 4 km SE of Salinas, Puerto Rico
  4. 3.0 4 km SE of Salinas, Puerto Rico
  5. 2.4 3 km S of Coco, Puerto Rico
  6. 2.7 12 km NNE of Arecibo, Puerto Rico
  7. 1.9 3 km SE of Salinas, Puerto Rico
  8. 3.0 0 km ENE of Río Cañas Abajo, Puerto Rico
  9. 2.6 1 km N of Pueblito del Rio, Puerto Rico
  10. 3.1 24 km NNW of Loíza, Puerto Rico
  11. 2.5 1 km ENE of Salinas, Puerto Rico
  12. 2.8 3 km N of San Juan, Puerto Rico
  13. 3.4 29 km N of Dorado, Puerto Rico
  14. 2.1 0 km SSW of Cayuco, Puerto Rico
  15. 2.1 4 km SSE of Cayey, 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.