QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

13 km NW of Loíza, Puerto Rico

· 82 km deep · released about 150 lb of TNT

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10 km30 km60 km120 km N Loíza Municipio 9 kmCarolina Municipio 14 kmSan Juan Municipio 16 kmTrujillo Alto Municipio 21 kmCataño Municipio 22 kmCanóvanas Municipio 23 kmRío Grande Municipio 24 kmToa Baja Municipio 25 kmGuaynabo Municipio 26 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
82 km below the surface
Felt
no reports yet
Nearest
Loíza Municipio, 9 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2832 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 150 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 99,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 70,000× the energy of this one
  3. Around the size people start to feel M 3.0 6.2× the energy of this one
  4. This earthquake M 2.5 about 150 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 18.5231, -65.9618. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Loíza Municipio, PR 9 km (6 mi) NNW of here earthquakes near Loíza Municipio
Carolina Municipio, PR 14 km (9 mi) N of here earthquakes near Carolina Municipio
San Juan Municipio, PR 16 km (10 mi) NE of here earthquakes near San Juan Municipio
Trujillo Alto Municipio, PR 21 km (13 mi) NNE of here earthquakes near Trujillo Alto Municipio
Cataño Municipio, PR 22 km (13 mi) ENE of here earthquakes near Cataño Municipio
Canóvanas Municipio, PR 23 km (14 mi) NNW of here earthquakes near Canóvanas Municipio

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

Aftershocks so far

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

  1. 2.6 Puerto Rico region
  2. 2.5 50 km N of San Juan, Puerto Rico
  3. 1.8 1 km NW of Aguas Buenas, Puerto Rico
  4. 2.0 Puerto Rico region
  5. 2.4 30 km NNE of Luquillo, Puerto Rico
  6. 2.9 3 km N of Naranjito, Puerto Rico
  7. 2.2 26 km N of Dorado, Puerto Rico
  8. 2.5 31 km N of Brenas, Puerto Rico
  9. 3.0 36 km N of Suárez, Puerto Rico
  10. 2.9 29 km NE of Fajardo, Puerto Rico
  11. 2.3 4 km NW of Palomas, Puerto Rico
  12. 2.3 Puerto Rico region
  13. 2.5 31 km NNE of San Juan, Puerto Rico
  14. 1.7 50 km N of San Juan, Puerto Rico
  15. 1.9 3 km ENE of Bairoa, 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.