QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

6 km ESE of San Juan, Puerto Rico

· 100 km deep · released about 160 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Juan Municipio 2 kmCarolina Municipio 10 kmCataño Municipio 10 kmLoíza Municipio 12 kmGuaynabo Municipio 12 kmTrujillo Alto Municipio 12 kmToa Baja Municipio 15 kmBayamón Municipio 15 kmGurabo Municipio 19 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
100 km below the surface
Felt
no reports yet
Nearest
San Juan Municipio, 2 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2809 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 160 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 95,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 68,000× the energy of this one
  3. Around the size people start to feel M 3.0 6× the energy of this one
  4. This earthquake M 2.5 about 160 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 18.4331, -66.0520. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Juan Municipio, PR 2 km (1 mi) NE of here earthquakes near San Juan Municipio
Carolina Municipio, PR 10 km (6 mi) WNW of here earthquakes near Carolina Municipio
Cataño Municipio, PR 10 km (6 mi) E of here earthquakes near Cataño Municipio
Loíza Municipio, PR 12 km (7 mi) W of here earthquakes near Loíza Municipio
Guaynabo Municipio, PR 12 km (7 mi) NNE of here earthquakes near Guaynabo Municipio
Trujillo Alto Municipio, PR 12 km (7 mi) NNW of here earthquakes near Trujillo Alto Municipio

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

Aftershocks so far

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

  1. 2.0 14 km NE of Luquillo, Puerto Rico
  2. 2.2 16 km N of San Juan, Puerto Rico
  3. 1.7 2 km SSW of G. L. Garcia, Puerto Rico
  4. 2.4 3 km SE of Cayey, Puerto Rico
  5. 2.2 4 km SSE of Cayey, Puerto Rico
  6. 1.6 3 km SE of Cayey, Puerto Rico
  7. 2.6 13 km N of Tierras Nuevas Poniente, Puerto Rico
  8. 1.7 4 km ENE of Bayamon, Puerto Rico
  9. 2.2 7 km WNW of Palomas, Puerto Rico
  10. 1.6 3 km ESE of La Plena, Puerto Rico
  11. 1.5 3 km ENE of La Plena, Puerto Rico
  12. 1.6 3 km E of La Plena, Puerto Rico
  13. 1.6 3 km E of La Plena, Puerto Rico
  14. 2.2 4 km SSW of Las Piedras, Puerto Rico
  15. 2.0 Puerto Rico region

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.