QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

2 km ESE of Cataño, Puerto Rico

· 10 km deep · released about 8.4 lb of TNT

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10 km30 km60 km120 km N San Juan Municipio 3 kmCataño Municipio 5 kmGuaynabo Municipio 10 kmToa Baja Municipio 10 kmBayamón Municipio 12 kmCarolina Municipio 14 kmTrujillo Alto Municipio 15 kmLoíza Municipio 17 kmToa Alta 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 1.6 (md)
Depth
10 km below the surface
Felt
no reports yet
Nearest
San Juan Municipio, 3 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2701 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 8.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,300,000× the energy of this one
  3. Around the size people start to feel M 3.0 110× the energy of this one
  4. This earthquake M 1.6 about 8.4 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 18.4323, -66.1001. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Juan Municipio, PR 3 km (2 mi) WNW of here earthquakes near San Juan Municipio
Cataño Municipio, PR 5 km (3 mi) ESE of here earthquakes near Cataño Municipio
Guaynabo Municipio, PR 10 km (6 mi) N of here earthquakes near Guaynabo Municipio
Toa Baja Municipio, PR 10 km (6 mi) ESE of here earthquakes near Toa Baja Municipio
Bayamón Municipio, PR 12 km (7 mi) NE of here earthquakes near Bayamón Municipio
Carolina Municipio, PR 14 km (9 mi) WNW of here earthquakes near Carolina Municipio

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

Aftershocks so far

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

  1. 1.9 37 km N of San Juan, Puerto Rico
  2. 1.5 1 km WSW of Vázquez, Puerto Rico
  3. 2.1 9 km NNW of Levittown, Puerto Rico
  4. 2.5 36 km NNE of Suárez, Puerto Rico
  5. 1.9 20 km NNE of Luquillo, Puerto Rico
  6. 2.1 19 km N of Brenas, Puerto Rico
  7. 2.1 2 km ENE of Celada, Puerto Rico
  8. 1.9 16 km N of Tierras Nuevas Poniente, Puerto Rico
  9. 1.8 11 km NNW of San Juan, Puerto Rico
  10. 2.3 25 km N of Brenas, Puerto Rico
  11. 2.0 19 km NNE of Tierras Nuevas Poniente, Puerto Rico
  12. 1.9 5 km SE of La Plena, Puerto Rico
  13. 1.7 5 km E of San Juan, Puerto Rico
  14. 2.3 6 km NW of Trujillo Alto, Puerto Rico
  15. 1.7 5 km NNW of Brenas, 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.