QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9Md

5 km NE of Arecibo, Puerto Rico

· 17 km deep · released about 21 lb of TNT

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10 km30 km60 km120 km N Arecibo Municipio 8 kmBarceloneta Municipio 14 kmHatillo Municipio 15 kmFlorida Municipio 20 kmCamuy Municipio 21 kmManatí Municipio 21 kmQuebradillas Municipio 27 kmUtuado Municipio 27 kmCiales 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 1.9 (Md)
Depth
17 km below the surface
Felt
no reports yet
Nearest
Arecibo Municipio, 8 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3786 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 21 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 5.8 710,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 500,000× the energy of this one
  3. Around the size people start to feel M 3.0 45× the energy of this one
  4. This earthquake M 1.9 about 21 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 18.5093, -66.6804. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Arecibo Municipio, PR 8 km (5 mi) N of here earthquakes near Arecibo Municipio
Barceloneta Municipio, PR 14 km (8 mi) WNW of here earthquakes near Barceloneta Municipio
Hatillo Municipio, PR 15 km (9 mi) ENE of here earthquakes near Hatillo Municipio
Florida Municipio, PR 20 km (12 mi) NW of here earthquakes near Florida Municipio
Camuy Municipio, PR 21 km (13 mi) ENE of here earthquakes near Camuy Municipio
Manatí Municipio, PR 21 km (13 mi) WNW of here earthquakes near Manatí 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. 2.6 45 km N of Hatillo, Puerto Rico
  2. 2.9 42 km N of Hatillo, Puerto Rico
  3. 2.5 18 km N of Quebradillas, Puerto Rico
  4. 2.7 1 km ESE of Ceiba, Puerto Rico
  5. 2.3 3 km N of Orocovis, Puerto Rico
  6. 2.7 13 km NNE of Carrizales, Puerto Rico
  7. 2.2 12 km N of Carrizales, Puerto Rico
  8. 1.8 5 km E of Espino, Puerto Rico
  9. 1.9 6 km NNW of Isabela, Puerto Rico
  10. 1.8 6 km WNW of Las Marías, Puerto Rico
  11. 2.9 30 km NNE of Arecibo, Puerto Rico
  12. 3.1 15 km NNE of Carrizales, Puerto Rico
  13. 3.0 10 km N of San Antonio, Puerto Rico
  14. 2.8 22 km N of Arecibo, Puerto Rico
  15. 2.6 15 km N of Animas, 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.