QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

1 km SE of Corozal, Puerto Rico

· 60 km deep · released about 830 lb of TNT

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10 km30 km60 km120 km N Corozal Municipio 4 kmToa Alta Municipio 7 kmNaranjito Municipio 8 kmVega Alta Municipio 12 kmMorovis Municipio 12 kmBayamón Municipio 15 kmBarranquitas Municipio 15 kmComerío Municipio 15 kmDorado 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 3.0 (md)
Depth
60 km below the surface
Felt
no reports yet
Nearest
Corozal Municipio, 4 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3225 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 830 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 410,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 18,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 13,000× the energy of this one
  4. This earthquake M 3.0 about 830 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 18.3356, -66.3085. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Corozal Municipio, PR 4 km (2 mi) NNE of here earthquakes near Corozal Municipio
Toa Alta Municipio, PR 7 km (5 mi) WSW of here earthquakes near Toa Alta Municipio
Naranjito Municipio, PR 8 km (5 mi) NW of here earthquakes near Naranjito Municipio
Vega Alta Municipio, PR 12 km (7 mi) SSE of here earthquakes near Vega Alta Municipio
Morovis Municipio, PR 12 km (7 mi) E of here earthquakes near Morovis Municipio
Bayamón Municipio, PR 15 km (9 mi) W of here earthquakes near Bayamón 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. 2.7 26 km NNW of Brenas, Puerto Rico
  2. 2.1 3 km SW of Potala Pastillo, Puerto Rico
  3. 2.9 1 km WSW of Cataño, Puerto Rico
  4. 2.6 5 km N of Brenas, Puerto Rico
  5. 1.9 8 km NNE of Animas, Puerto Rico
  6. 2.7 10 km NNW of Tierras Nuevas Poniente, Puerto Rico
  7. 1.9 1 km SSW of Guayabal, Puerto Rico
  8. 1.8 5 km NNE of Villalba, Puerto Rico
  9. 3.0 1 km E of Barceloneta, Puerto Rico
  10. 2.5 2 km WNW of Sabana, Puerto Rico
  11. 2.0 5 km SE of Ponce, Puerto Rico
  12. 2.4 5 km SW of Orocovis, Puerto Rico
  13. 3.3 4 km NE of Brenas, Puerto Rico
  14. 2.3 2 km NNW of Potala Pastillo, Puerto Rico
  15. 3.0 4 km SSE of Cayey, 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.