QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0Md

1 km S of Campanilla, Puerto Rico

· 128 km deep · released about 950 lb of TNT

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10 km30 km60 km120 km N Toa Alta Municipio 5 kmToa Baja Municipio 7 kmDorado Municipio 8 kmBayamón Municipio 10 kmCataño Municipio 10 kmVega Alta Municipio 11 kmNaranjito Municipio 13 kmGuaynabo Municipio 15 kmCorozal Municipio 15 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
128 km below the surface
Felt
no reports yet
Nearest
Toa Alta Municipio, 5 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3517 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 950 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 6.7 350,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 950 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 18.4088, -66.2360. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Toa Alta Municipio, PR 5 km (3 mi) N of here earthquakes near Toa Alta Municipio
Toa Baja Municipio, PR 7 km (4 mi) SW of here earthquakes near Toa Baja Municipio
Dorado Municipio, PR 8 km (5 mi) SSE of here earthquakes near Dorado Municipio
Bayamón Municipio, PR 10 km (6 mi) NW of here earthquakes near Bayamón Municipio
Cataño Municipio, PR 10 km (6 mi) WSW of here earthquakes near Cataño Municipio
Vega Alta Municipio, PR 11 km (7 mi) ESE of here earthquakes near Vega Alta Municipio

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

Aftershocks so far

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

  1. 2.5 20 km NNE of San Juan, Puerto Rico
  2. 2.5 22 km N of Tierras Nuevas Poniente, Puerto Rico
  3. 3.6 20 km NNW of Loíza, Puerto Rico
  4. 1.5 2 km WSW of Las Piedras, Puerto Rico
  5. 3.1 1 km SSE of Pájaros, Puerto Rico
  6. 2.5 1 km NE of Salinas, Puerto Rico
  7. 2.4 3 km WSW of Gurabo, Puerto Rico
  8. 3.1 20 km N of Dorado, Puerto Rico
  9. 3.4 4 km N of Vega Baja, Puerto Rico
  10. 2.9 1 km E of La Plena, Puerto Rico
  11. 2.1 2 km SW of Canovanas, Puerto Rico
  12. 2.2 1 km ESE of Cidra, Puerto Rico
  13. 3.2 4 km NNW of Bairoa, Puerto Rico
  14. 2.2 3 km S of Coamo, Puerto Rico
  15. 2.4 12 km NNE of Arecibo, 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.