QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5Md

7 km NNW of Trujillo Alto, Puerto Rico

· 117 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Juan Municipio 3 kmCarolina Municipio 8 kmTrujillo Alto Municipio 9 kmGuaynabo Municipio 11 kmLoíza Municipio 11 kmCataño Municipio 12 kmBayamón Municipio 15 kmGurabo Municipio 17 kmToa Baja Municipio 17 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 2.5 (Md)
Depth
117 km below the surface
Felt
no reports yet
Nearest
San Juan Municipio, 3 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3542 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 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 18.4097, -66.0412. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Juan Municipio, PR 3 km (2 mi) ESE of here earthquakes near San Juan Municipio
Carolina Municipio, PR 8 km (5 mi) W of here earthquakes near Carolina Municipio
Trujillo Alto Municipio, PR 9 km (6 mi) NNW of here earthquakes near Trujillo Alto Municipio
Guaynabo Municipio, PR 11 km (7 mi) NE of here earthquakes near Guaynabo Municipio
Loíza Municipio, PR 11 km (7 mi) WSW of here earthquakes near Loíza Municipio
Cataño Municipio, PR 12 km (7 mi) ESE of here earthquakes near Cataño Municipio

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

Aftershocks so far

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

  1. 2.1 2 km SW of Canovanas, Puerto Rico
  2. 2.2 1 km ESE of Cidra, Puerto Rico
  3. 3.2 4 km NNW of Bairoa, Puerto Rico
  4. 2.6 1 km WSW of Campo Rico, Puerto Rico
  5. 2.5 3 km W of Guaynabo, Puerto Rico
  6. 2.1 0 km N of Pastos, Puerto Rico
  7. 2.9 38 km N of San Juan, Puerto Rico
  8. 2.5 1 km WSW of Bairoa, Puerto Rico
  9. 3.1 1 km WSW of Sabana, Puerto Rico
  10. 2.3 6 km S of Punta Santiago, Puerto Rico
  11. 3.0 7 km N of Vieques, Puerto Rico
  12. 2.9 14 km N of Brenas, Puerto Rico
  13. 2.9 5 km NNE of Orocovis, Puerto Rico
  14. 2.2 9 km N of Loíza, Puerto Rico
  15. 1.8 3 km ESE 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.