QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

6 km NW of Trujillo Alto, Puerto Rico

· 113 km deep · released about 98 lb of TNT

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10 km30 km60 km120 km N San Juan Municipio 4 kmCarolina Municipio 8 kmTrujillo Alto Municipio 8 kmGuaynabo Municipio 10 kmLoíza Municipio 12 kmCataño Municipio 12 kmBayamón Municipio 15 kmGurabo Municipio 16 kmToa Baja Municipio 17 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 2.3 (md)
Depth
113 km below the surface
Felt
no reports yet
Nearest
San Juan Municipio, 4 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2672 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 98 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 150,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 110,000× the energy of this one
  3. Around the size people start to feel M 3.0 9.8× the energy of this one
  4. This earthquake M 2.3 about 98 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 18.4001, -66.0406. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Juan Municipio, PR 4 km (2 mi) SE of here earthquakes near San Juan Municipio
Carolina Municipio, PR 8 km (5 mi) W of here earthquakes near Carolina Municipio
Trujillo Alto Municipio, PR 8 km (5 mi) NNW of here earthquakes near Trujillo Alto Municipio
Guaynabo Municipio, PR 10 km (6 mi) NE of here earthquakes near Guaynabo Municipio
Loíza Municipio, PR 12 km (7 mi) WSW of here earthquakes near Loíza Municipio
Cataño Municipio, PR 12 km (8 mi) ESE of here earthquakes near Cataño Municipio

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

Aftershocks so far

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

  1. 2.5 28 km NNE of San Juan, Puerto Rico
  2. 2.7 0 km S of Cataño, Puerto Rico
  3. 2.0 3 km WNW of Corozal, Puerto Rico
  4. 1.7 2 km SSW of H. Rivera Colon, Puerto Rico
  5. 2.1 2 km NW of Galateo, Puerto Rico
  6. 1.6 26 km N of Suárez, Puerto Rico
  7. 1.9 5 km WNW of Aguas Buenas, Puerto Rico
  8. 1.7 3 km N of Orocovis, Puerto Rico
  9. 2.6 Puerto Rico region
  10. 2.3 4 km N of Vega Baja, Puerto Rico
  11. 1.6 7 km WSW of Orocovis, Puerto Rico
  12. 2.1 0 km ENE of Sabana, Puerto Rico
  13. 2.0 25 km NNE of Luquillo, Puerto Rico
  14. 2.3 39 km N of San Juan, Puerto Rico
  15. 2.6 10 km N 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.

On USGS

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