QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

4 km NNE of Guaynabo, Puerto Rico

· 112 km deep · released about 120 lb of TNT

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10 km30 km60 km120 km N San Juan Municipio 4 kmGuaynabo Municipio 6 kmCataño Municipio 8 kmBayamón Municipio 9 kmTrujillo Alto Municipio 12 kmToa Baja Municipio 13 kmCarolina Municipio 13 kmAguas Buenas Municipio 15 kmToa Alta Municipio 16 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
112 km below the surface
Felt
no reports yet
Nearest
San Juan Municipio, 4 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2857 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 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 89,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.9× 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 18.3921, -66.0950. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Juan Municipio, PR 4 km (3 mi) SW of here earthquakes near San Juan Municipio
Guaynabo Municipio, PR 6 km (4 mi) NNE of here earthquakes near Guaynabo Municipio
Cataño Municipio, PR 8 km (5 mi) SE of here earthquakes near Cataño Municipio
Bayamón Municipio, PR 9 km (6 mi) ENE of here earthquakes near Bayamón Municipio
Trujillo Alto Municipio, PR 12 km (7 mi) WNW of here earthquakes near Trujillo Alto Municipio
Toa Baja Municipio, PR 13 km (8 mi) SE 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

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

  1. 1.9 2 km N of Carolina, Puerto Rico
  2. 1.7 33 km N of San Juan, Puerto Rico
  3. 2.1 4 km ESE of Palmarejo, Puerto Rico
  4. 2.1 1 km SSE of G. L. Garcia, Puerto Rico
  5. 2.1 6 km NNW of Loíza, Puerto Rico
  6. 1.6 9 km W of Orocovis, Puerto Rico
  7. 1.7 0 km WNW of Mariano Colón, Puerto Rico
  8. 2.2 3 km SSW of Pastos, Puerto Rico
  9. 2.1 9 km N of Villalba, Puerto Rico
  10. 1.7 3 km ENE of Pastos, Puerto Rico
  11. 2.8 37 km N of San Juan, Puerto Rico
  12. 2.2 2 km SE of Cidra, Puerto Rico
  13. 2.7 2 km E of Morovis, Puerto Rico
  14. 2.6 3 km NNW of Benitez, Puerto Rico
  15. 1.6 2 km SE 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.