QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

0 km ENE of San Juan, Puerto Rico

· 75 km deep · released about 180 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cataño Municipio 6 kmSan Juan Municipio 6 kmToa Baja Municipio 10 kmGuaynabo Municipio 14 kmBayamón Municipio 15 kmCarolina Municipio 16 kmLoíza Municipio 17 kmDorado Municipio 17 kmTrujillo Alto Municipio 18 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
75 km below the surface
Felt
no reports yet
Nearest
Cataño Municipio, 6 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3040 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 180 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 83,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 59,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.2× the energy of this one
  4. This earthquake M 2.5 about 180 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 18.4710, -66.0981. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cataño Municipio, PR 6 km (4 mi) ENE of here earthquakes near Cataño Municipio
San Juan Municipio, PR 6 km (4 mi) NNW of here earthquakes near San Juan Municipio
Toa Baja Municipio, PR 10 km (6 mi) E of here earthquakes near Toa Baja Municipio
Guaynabo Municipio, PR 14 km (9 mi) N of here earthquakes near Guaynabo Municipio
Bayamón Municipio, PR 15 km (10 mi) NNE of here earthquakes near Bayamón Municipio
Carolina Municipio, PR 16 km (10 mi) WNW of here earthquakes near Carolina Municipio

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

Aftershocks so far

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

  1. 2.5 2 km ESE of Vega Alta, Puerto Rico
  2. 2.7 4 km ESE of Florida, Puerto Rico
  3. 2.7 24 km NNE of Vieques, Puerto Rico
  4. 3.0 4 km ESE of Bayamon, Puerto Rico
  5. 2.6 3 km SSE of Guaynabo, Puerto Rico
  6. 2.8 31 km N of Tierras Nuevas Poniente, Puerto Rico
  7. 2.8 3 km NNE of Naranjito, Puerto Rico
  8. 2.8 50 km N of San Juan, Puerto Rico
  9. 2.0 1 km NE of Sabana Seca, Puerto Rico
  10. 2.9 5 km SE of Cataño, Puerto Rico
  11. 2.1 7 km E of Naranjito, Puerto Rico
  12. 2.5 33 km N of Tierras Nuevas Poniente, Puerto Rico
  13. 2.3 2 km SW of Bajandas, Puerto Rico
  14. 2.1 14 km N of Brenas, Puerto Rico
  15. 2.7 2 km E of La Fermina, 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.