QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

9 km NNW of Garrochales, Puerto Rico

· 86 km deep · released about 23 lb of TNT

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10 km30 km60 km120 km N Barceloneta Municipio 9 kmArecibo Municipio 13 kmManatí Municipio 15 kmFlorida Municipio 19 kmHatillo Municipio 23 kmVega Baja Municipio 23 kmCiales Municipio 28 kmCamuy Municipio 29 kmVega Alta Municipio 30 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 1.9 (md)
Depth
86 km below the surface
Felt
no reports yet
Nearest
Barceloneta Municipio, 9 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3036 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 23 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 660,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 470,000× the energy of this one
  3. Around the size people start to feel M 3.0 42× the energy of this one
  4. This earthquake M 1.9 about 23 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 18.5331, -66.6040. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Barceloneta Municipio, PR 9 km (5 mi) NW of here earthquakes near Barceloneta Municipio
Arecibo Municipio, PR 13 km (8 mi) NE of here earthquakes near Arecibo Municipio
Manatí Municipio, PR 15 km (9 mi) NW of here earthquakes near Manatí Municipio
Florida Municipio, PR 19 km (12 mi) NNW of here earthquakes near Florida Municipio
Hatillo Municipio, PR 23 km (14 mi) ENE of here earthquakes near Hatillo Municipio
Vega Baja Municipio, PR 23 km (15 mi) WNW of here earthquakes near Vega Baja Municipio

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

Aftershocks so far

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

  1. 2.6 40 km NNW of Brenas, Puerto Rico
  2. 2.1 5 km NW of Adjuntas, Puerto Rico
  3. 2.1 15 km N of Quebradillas, Puerto Rico
  4. 1.6 12 km NNW of Brenas, Puerto Rico
  5. 2.6 41 km N of Tierras Nuevas Poniente, Puerto Rico
  6. 2.9 20 km NNW of Brenas, Puerto Rico
  7. 3.1 8 km N of Hatillo, Puerto Rico
  8. 2.5 13 km ESE of Maricao, Puerto Rico
  9. 1.7 1 km SSW of Adjuntas, Puerto Rico
  10. 1.6 3 km SW of Adjuntas, Puerto Rico
  11. 2.5 26 km N of Tierras Nuevas Poniente, Puerto Rico
  12. 2.3 4 km N of Brenas, Puerto Rico
  13. 2.1 16 km N of Quebradillas, Puerto Rico
  14. 2.6 1 km ESE of Carrizales, Puerto Rico
  15. 2.6 6 km NNE of Carrizales, 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.