QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

10 km N of Arecibo, Puerto Rico

· 8.2 km deep · released about 130 lb of TNT

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10 km30 km60 km120 km N Arecibo Municipio 16 kmHatillo Municipio 17 kmBarceloneta Municipio 20 kmCamuy Municipio 21 kmQuebradillas Municipio 25 kmManatí Municipio 27 kmFlorida Municipio 28 kmIsabela Municipio 33 kmUtuado Municipio 33 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 2.4 (md)
Depth
8.2 km below the surface
Felt
no reports yet
Nearest
Arecibo Municipio, 16 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 869 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 130 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 120,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 83,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.4× the energy of this one
  4. This earthquake M 2.4 about 130 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 18.5688, -66.7168. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Arecibo Municipio, PR 16 km (10 mi) NNW of here earthquakes near Arecibo Municipio
Hatillo Municipio, PR 17 km (10 mi) NNE of here earthquakes near Hatillo Municipio
Barceloneta Municipio, PR 20 km (12 mi) WNW of here earthquakes near Barceloneta Municipio
Camuy Municipio, PR 21 km (13 mi) NE of here earthquakes near Camuy Municipio
Quebradillas Municipio, PR 25 km (16 mi) ENE of here earthquakes near Quebradillas Municipio
Manatí Municipio, PR 27 km (17 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

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

  1. 2.8 20 km N of Tierras Nuevas Poniente, Puerto Rico
  2. 3.4 6 km NNW of Vega Baja, Puerto Rico
  3. 2.6 4 km WNW of Orocovis, Puerto Rico
  4. 3.3 6 km WSW of Estancias de Florida, Puerto Rico
  5. 2.5 4 km WNW of San Sebastián, Puerto Rico
  6. 2.7 30 km N of Brenas, Puerto Rico
  7. 2.8 5 km ENE of Maricao, Puerto Rico
  8. 2.8 7 km S of Lares, Puerto Rico
  9. 2.9 24 km N of Garrochales, Puerto Rico
  10. 3.0 1 km NNE of Manatí, Puerto Rico
  11. 2.9 16 km N of Quebradillas, Puerto Rico
  12. 2.3 3 km WNW of Orocovis, Puerto Rico
  13. 2.6 8 km W of Orocovis, Puerto Rico
  14. 3.4 8 km WNW of San Antonio, Puerto Rico
  15. 2.9 17 km N 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.4 on 2018-12-09 — it released about 930 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

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