QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

47 km NNE of Isabela, Puerto Rico

· 10 km deep · released about 140 lb of TNT

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10 km30 km60 km120 km N Isabela Municipio 49 kmQuebradillas Municipio 50 kmCamuy Municipio 52 kmHatillo Municipio 54 kmAguadilla Municipio 55 kmArecibo Municipio 59 kmBarceloneta Municipio 61 kmMoca Municipio 62 kmSan Sebastián Municipio 65 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
10 km below the surface
Felt
no reports yet
Nearest
Isabela Municipio, 49 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3006 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 140 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 5.8 110,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 78,000× the energy of this one
  3. Around the size people start to feel M 3.0 6.9× the energy of this one
  4. This earthquake M 2.4 about 140 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 18.9140, -66.9028. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Isabela Municipio, PR 49 km (31 mi) NNE of here earthquakes near Isabela Municipio
Quebradillas Municipio, PR 50 km (31 mi) N of here earthquakes near Quebradillas Municipio
Camuy Municipio, PR 52 km (32 mi) N of here earthquakes near Camuy Municipio
Hatillo Municipio, PR 54 km (33 mi) NNW of here earthquakes near Hatillo Municipio
Aguadilla Municipio, PR 55 km (34 mi) NNE of here earthquakes near Aguadilla Municipio
Arecibo Municipio, PR 59 km (36 mi) NNW of here earthquakes near Arecibo Municipio

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

Aftershocks so far

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

  1. 2.5 19 km N of Arecibo, Puerto Rico
  2. 2.7 41 km NW of San Antonio, Puerto Rico
  3. 2.9 43 km N of Isabela, Puerto Rico
  4. 2.2 9 km NNE of San Antonio, Puerto Rico
  5. 2.5 23 km N of Carrizales, Puerto Rico
  6. 3.2 59 km N of San Antonio, Puerto Rico
  7. 2.8 56 km N of Hatillo, Puerto Rico
  8. 2.4 33 km NNW of Tierras Nuevas Poniente, Puerto Rico
  9. 2.8 32 km NNW of San Antonio, Puerto Rico
  10. 2.4 58 km N of Hatillo, Puerto Rico
  11. 2.2 44 km NNE of Carrizales, Puerto Rico
  12. 1.8 3 km NE of Hatillo, Puerto Rico
  13. 2.3 18 km NNE of Arecibo, Puerto Rico
  14. 2.5 9 km NNE of Isabela, Puerto Rico
  15. 2.5 12 km N of Hatillo, 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 4.7 on 2017-07-17 — it released about 2,100 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.