QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

11 km NNW of Brenas, Puerto Rico

· 99 km deep · released about 800 lb of TNT

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10 km30 km60 km120 km N Vega Baja Municipio 13 kmVega Alta Municipio 15 kmDorado Municipio 15 kmManatí Municipio 19 kmToa Baja Municipio 22 kmBarceloneta Municipio 23 kmToa Alta Municipio 26 kmCataño Municipio 27 kmMorovis Municipio 29 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
99 km below the surface
Felt
no reports yet
Nearest
Vega Baja Municipio, 13 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 983 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 800 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 6.7 420,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 19,000× 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 800 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 18.5695, -66.3645. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Vega Baja Municipio, PR 13 km (8 mi) NNE of here earthquakes near Vega Baja Municipio
Vega Alta Municipio, PR 15 km (9 mi) NNW of here earthquakes near Vega Alta Municipio
Dorado Municipio, PR 15 km (9 mi) NW of here earthquakes near Dorado Municipio
Manatí Municipio, PR 19 km (12 mi) NE of here earthquakes near Manatí Municipio
Toa Baja Municipio, PR 22 km (14 mi) NW of here earthquakes near Toa Baja Municipio
Barceloneta Municipio, PR 23 km (14 mi) ENE of here earthquakes near Barceloneta Municipio

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

Aftershocks so far

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

  1. 2.9 Puerto Rico region
  2. 2.2 3 km ENE of Carrizales, Puerto Rico
  3. 2.6 2 km NNE of Orocovis, Puerto Rico
  4. 2.6 24 km NNE of Dorado, Puerto Rico
  5. 2.8 3 km W of Miranda, Puerto Rico
  6. 2.9 7 km NNW of Dorado, Puerto Rico
  7. 2.6 20 km N of Tierras Nuevas Poniente, Puerto Rico
  8. 3.0 4 km NW of Corozal, Puerto Rico
  9. 2.2 6 km NNW of Jayuya, Puerto Rico
  10. 2.8 14 km N of Hatillo, Puerto Rico
  11. 2.6 5 km NW of Palomas, Puerto Rico
  12. 3.7 0 km ESE of Campanilla, Puerto Rico
  13. 2.8 19 km NNE of Arecibo, Puerto Rico
  14. 2.9 4 km N of Animas, Puerto Rico
  15. 2.9 3 km E of San Juan, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.8 on 2017-08-18 — it released about 600 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.