QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

12 km N of Isabela, Puerto Rico

· 12 km deep · released about 91 lb of TNT

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10 km30 km60 km120 km N Isabela Municipio 14 kmQuebradillas Municipio 18 kmAguadilla Municipio 20 kmCamuy Municipio 24 kmMoca Municipio 27 kmHatillo Municipio 29 kmSan Sebastián Municipio 32 kmAguada Municipio 32 kmAñasco Municipio 38 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 2.3 (md)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Isabela Municipio, 14 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3399 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 91 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 170,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 120,000× the energy of this one
  3. Around the size people start to feel M 3.0 10× the energy of this one
  4. This earthquake M 2.3 about 91 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 18.6128, -67.0091. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Isabela Municipio, PR 14 km (9 mi) N of here earthquakes near Isabela Municipio
Quebradillas Municipio, PR 18 km (11 mi) NNW of here earthquakes near Quebradillas Municipio
Aguadilla Municipio, PR 20 km (13 mi) NE of here earthquakes near Aguadilla Municipio
Camuy Municipio, PR 24 km (15 mi) NW of here earthquakes near Camuy Municipio
Moca Municipio, PR 27 km (17 mi) NNE of here earthquakes near Moca Municipio
Hatillo Municipio, PR 29 km (18 mi) NW of here earthquakes near Hatillo Municipio

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

Aftershocks so far

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

  1. 3.2 2 km S of La Playa, Puerto Rico
  2. 2.4 3 km NE of Mayagüez, Puerto Rico
  3. 2.3 41 km NNW of San Antonio, Puerto Rico
  4. 3.1 48 km NNW of San Antonio, Puerto Rico
  5. 2.1 0 km SSW of Cayuco, Puerto Rico
  6. 3.0 12 km NNE of Isabela, Puerto Rico
  7. 2.8 17 km N of Carrizales, Puerto Rico
  8. 2.3 10 km S of Lares, Puerto Rico
  9. 2.8 45 km N of Hatillo, Puerto Rico
  10. 2.7 15 km NNE of Hatillo, Puerto Rico
  11. 2.9 5 km SW of Las Marías, Puerto Rico
  12. 3.0 10 km NNW of Camuy, Puerto Rico
  13. 2.2 2 km SW of San Sebastián, Puerto Rico
  14. 2.4 41 km NNW of San Antonio, Puerto Rico
  15. 2.8 40 km NNW of San Antonio, 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.