QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

1 km NW of Naranjito, Puerto Rico

· 114 km deep · released about 460 lb of TNT

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10 km30 km60 km120 km N Naranjito Municipio 3 kmToa Alta Municipio 6 kmCorozal Municipio 8 kmBayamón Municipio 10 kmComerío Municipio 11 kmBarranquitas Municipio 14 kmAguas Buenas Municipio 15 kmGuaynabo Municipio 15 kmVega Alta Municipio 16 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 2.8 (md)
Depth
114 km below the surface
Felt
no reports yet
Nearest
Naranjito Municipio, 3 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2887 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 460 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 33,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 23,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.1× the energy of this one
  4. This earthquake M 2.8 about 460 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 18.3145, -66.2556. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Naranjito Municipio, PR 3 km (2 mi) N of here earthquakes near Naranjito Municipio
Toa Alta Municipio, PR 6 km (4 mi) SSW of here earthquakes near Toa Alta Municipio
Corozal Municipio, PR 8 km (5 mi) E of here earthquakes near Corozal Municipio
Bayamón Municipio, PR 10 km (6 mi) WSW of here earthquakes near Bayamón Municipio
Comerío Municipio, PR 11 km (7 mi) NNW of here earthquakes near Comerío Municipio
Barranquitas Municipio, PR 14 km (9 mi) NNE of here earthquakes near Barranquitas Municipio

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

Aftershocks so far

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

  1. 2.4 26 km N of San Juan, Puerto Rico
  2. 1.7 2 km SSE of Pájaros, Puerto Rico
  3. 1.6 4 km W of Central Aguirre, Puerto Rico
  4. 2.4 8 km NNE of Dorado, Puerto Rico
  5. 1.8 5 km SSW of Central Aguirre, Puerto Rico
  6. 2.4 4 km NNE of Guaynabo, Puerto Rico
  7. 1.9 1 km N of Las Ochenta, Puerto Rico
  8. 2.2 5 km ESE of G. L. Garcia, Puerto Rico
  9. 2.2 17 km NNW of Garrochales, Puerto Rico
  10. 2.7 5 km ESE of San Juan, Puerto Rico
  11. 2.0 0 km NW of Playita Cortada, Puerto Rico
  12. 2.2 1 km ESE of Potala Pastillo, Puerto Rico
  13. 2.1 3 km ESE of Cayey, Puerto Rico
  14. 2.3 17 km NNE of Brenas, Puerto Rico
  15. 2.7 6 km NW of Sabana, 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.