QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

17 km N of Loíza, Puerto Rico

· 89 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Loíza Municipio 16 kmCarolina Municipio 22 kmSan Juan Municipio 25 kmRío Grande Municipio 26 kmCanóvanas Municipio 29 kmTrujillo Alto Municipio 30 kmCataño Municipio 30 kmLuquillo Municipio 32 kmToa Baja Municipio 33 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
89 km below the surface
Felt
no reports yet
Nearest
Loíza Municipio, 16 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3431 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 18.5871, -65.9108. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Loíza Municipio, PR 16 km (10 mi) NNE of here earthquakes near Loíza Municipio
Carolina Municipio, PR 22 km (14 mi) NNE of here earthquakes near Carolina Municipio
San Juan Municipio, PR 25 km (15 mi) NE of here earthquakes near San Juan Municipio
Río Grande Municipio, PR 26 km (16 mi) NNW of here earthquakes near Río Grande Municipio
Canóvanas Municipio, PR 29 km (18 mi) N of here earthquakes near Canóvanas Municipio
Trujillo Alto Municipio, PR 30 km (18 mi) NNE 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

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

  1. 3.1 24 km NNW of Loíza, Puerto Rico
  2. 3.3 51 km N of San Juan, Puerto Rico
  3. 2.8 3 km N of San Juan, Puerto Rico
  4. 3.4 29 km N of Dorado, Puerto Rico
  5. 3.1 1 km NW of Bayamón, Puerto Rico
  6. 2.7 18 km NNE of Luquillo, Puerto Rico
  7. 2.0 35 km NNE of Luquillo, Puerto Rico
  8. 2.3 1 km S of Río Lajas, Puerto Rico
  9. 2.6 21 km NNE of Dorado, Puerto Rico
  10. 2.4 22 km NNE of Luquillo, Puerto Rico
  11. 3.1 5 km ESE of Cataño, Puerto Rico
  12. 2.9 3 km N of Trujillo Alto, Puerto Rico
  13. 2.7 48 km N of Loíza, Puerto Rico
  14. 2.6 45 km NNE of Vieques, Puerto Rico
  15. 2.7 20 km N of Brenas, 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.