QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5Md

3 km W of Guaynabo, Puerto Rico

· 62 km deep · released about 170 lb of TNT

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10 km30 km60 km120 km N Guaynabo Municipio 3 kmBayamón Municipio 3 kmCataño Municipio 10 kmSan Juan Municipio 10 kmToa Alta Municipio 11 kmAguas Buenas Municipio 11 kmToa Baja Municipio 12 kmNaranjito Municipio 14 kmTrujillo Alto 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 2.5 (Md)
Depth
62 km below the surface
Felt
no reports yet
Nearest
Guaynabo Municipio, 3 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3474 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 18.3589, -66.1396. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guaynabo Municipio, PR 3 km (2 mi) WNW of here earthquakes near Guaynabo Municipio
Bayamón Municipio, PR 3 km (2 mi) ENE of here earthquakes near Bayamón Municipio
Cataño Municipio, PR 10 km (6 mi) S of here earthquakes near Cataño Municipio
San Juan Municipio, PR 10 km (6 mi) SW of here earthquakes near San Juan Municipio
Toa Alta Municipio, PR 11 km (7 mi) E of here earthquakes near Toa Alta Municipio
Aguas Buenas Municipio, PR 11 km (7 mi) N of here earthquakes near Aguas Buenas Municipio

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

Aftershocks so far

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

  1. 2.3 4 km WNW of Villalba, Puerto Rico
  2. 1.8 3 km S of Cayey, Puerto Rico
  3. 2.5 3 km SE of Salinas, Puerto Rico
  4. 2.7 1 km S of Las Ochenta, Puerto Rico
  5. 2.9 35 km N of San Juan, Puerto Rico
  6. 2.0 3 km NW of Villalba, Puerto Rico
  7. 1.9 7 km WSW of Orocovis, Puerto Rico
  8. 2.6 1 km NW of Bayamón, Puerto Rico
  9. 2.3 5 km N of Olimpo, Puerto Rico
  10. 3.0 6 km NNE of Levittown, Puerto Rico
  11. 2.9 Puerto Rico region
  12. 2.6 11 km N of Garrochales, Puerto Rico
  13. 1.6 3 km SE of Punta Santiago, Puerto Rico
  14. 2.5 20 km NNE of San Juan, Puerto Rico
  15. 2.5 22 km N of Tierras Nuevas Poniente, 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.